MDOT Michigan Department of Transportation
SPEED ROAD LIMIT WORK 45 AHEAD
Maintenance Work Zone Traffic Control Guidelines
STOP SLOW
Maintenance Division April 2007
Work Zone Traffic Control 2007.doc
Engineering Manual Preamble
This manual provides guidance to administrative, engineering, and technical staff. Engineering practice requires that professionals use a combination of technical skills and judgment in decision making. Engineering judgment is necessary to allow decisions to account for unique site-specific conditions and considerations to provide high quality products, within budget, and to protect the public health, safety, and welfare. This manual provides the general operational guidelines; however, it is understood that adaptation, adjustments, and deviations are sometimes necessary. Innovation is a key foundational element to advance the state of engineering practice and develop more effective and efficient engineering solutions and materials. As such, it is essential that our engineering manuals provide a vehicle to promote, pilot, or implement technologies or practices that provide efficiencies and quality products, while maintaining the safety, health, and welfare of the public. It is expected when making significant or impactful deviations from the technical information from these guidance materials, that reasonable consultations with experts, technical committees, and/or policy setting bodies occur prior to actions within the timeframes allowed. It is also expected that these consultations will eliminate any potential conflicts of interest, perceived or otherwise. MDOT Leadership is committed to a culture of innovation to optimize engineering solutions. The National Society of Professional Engineers Code of Ethics for Engineering is founded on six fundamental canons. Those canons are provided below. Engineers, in the fulfillment of their professional duties, shall: 1. Hold paramount the safety, health, and welfare of the public. 2. Perform Services only in areas of their competence. 3. Issue public statement only in an objective and truthful manner. 4. Act for each employer or client as faithful agents or trustees. 5. Avoid deceptive acts. 6. Conduct themselves honorably, reasonably, ethically and lawfully so as to enhance the honor, reputation, and usefulness of the profession.
Table of Contents
Introduction...... 1 Traffic Control Plans...... 1 General Signing Guidelines ...... 1 Warning Signs...... 2 Sign Spacing – “D” Distances ...... 2 Tapers – “L” Lengths...... 2 Cone and Drum Spacing for Channelization ...... 3 Buffer Space...... 3 Shadow Vehicle ...... 3 Truck Mounted Attenuators (TMAs)...... 4 Arrow Panels...... 4 Partial Lane Closures ...... 5 Mobile Operations ...... 5 Definitions...... 7 Section 6G.02 Work Duration (MI)...... 7 Long-Term Stationary Work...... 7 Intermediate-Term Stationary Work...... 8 Short-Term Stationary Work ...... 8 Short-Duration Work ...... 8 Mobile Operations ...... 9 Work Zone Defined ...... 10
Appendix A Traffic Control Typicals ...... A1 - A49
Appendix B Guidelines for Truck Mounted Attenuator Used by Maintenance Forces Working on MDOT Projects...... B1 Examples of TMA application...... B1 Equipment Requirements...... B1 TMA...... B1 Vehicle ...... B1 Operation and Placement of TMAs ...... B2 Operation...... B2 Placement...... B2
i List of Traffic Control Typicals
Use of Lighted Arrow ...... A1 Work Outside Shoulder...... A2 Work on Shoulder Two-Lane, Two-Way Roadway (No Speed Reduction)...... A3 & A4 (10 MPH Speed Reduction)...... A5 & A6 Divided Roadway or Freeway (No Speed Reduction)...... A7 & A8 (10 MPH Speed Reduction)...... A9 & A10 Work in Lane Lane Closure on a Two-Lane, Two-Way Roadway Utilizing Traffic Regulator ...... A11 & A12 Utilizing Temporary Traffic Signal ...... A13 Lane Closure on an Undivided Multi-Lane Roadway (No Speed Reduction)...... A14 & A15 (10 MPH Speed Reduction)...... A16 & A17 Closure of Center Two Lanes of a Multi-Lane Undivided Roadway (No Speed Reduction)...... A18 & A19 (10 MPH Speed Reduction)...... A20 & A21 Closure of Center and One Adjacent Through Lane of a Multi-Lane Undivided Roadway (No Speed Reduction)...... A22 & A23 (10 MPH Speed Reduction)...... A24 & A25 Closure of Center and Two Adjacent Through Lanes of a Multi-Lane Undivided Roadway (No Speed Reduction)...... A26 & A27 (10 MPH Speed Reduction)...... A28 & A29 Single Lane Closure on a Freeway (10 MPH Step Down in Speed) ...... A30 & A31 (10 MPH Step Down with Where Workers Present) ...... A32 & A33 (10 MPH Step Down with Where Workers Present Long-Term Stationary) ...... A34 Two Lane Closure on Freeway...... A35 Work around Ramps Single Lane Freeway Closure through Exit Ramp Area ...... A36 Single Lane Freeway Closure through Entrance Ramp Area...... A37 Work Operations on Exit Ramp ...... A38 Mobile Operations Shoulder Work w/ Low Traffic Volumes and Adequate Sight Distances...... A39 Shoulder Work on Divided Roadway or Freeway...... A40 Lane Closure on Multi-lane Roadway w/ Curbs ...... A41 Lane Closure on Two-Lane Roadway...... A42 Lane Closure on Multi-Lane Roadway ...... A43 Urban Freeway Operation ...... A44 Moving Lane Closure on Two-Lane Roadway ...... A45 Miscellaneous Temporary Sign Covering (Example) ...... A46 “B”, “D” and “L” Tables...... A47 Workzone Signing Sequence and Setup...... A48 & A49 WWP Signing Treatment for Two Way and Limited Access Roadways...... A50 & A51
ii
Introduction Temporary signing is a very important part of any maintenance operation. The purpose of this guidance document is to provide guidance for the placement of temporary signing in maintenance work zones. If in the use of these guidelines you have questions or come across items that should be included or need modification contact the Region Support Unit of the Maintenance Division at 517-322-3300. Traffic Control Plans Traffic control plans typical to most maintenance operations are shown in Appendix A. These standard plans should be used as guidelines for the layout of traffic control devices within work zones. Certain job and traffic conditions may warrant modification of these plans or the use of traffic control measures not shown within these guidelines. If there is a need to modify one of these guides, please contact your local TSC or Region traffic representative for assistance. General Signing Guidelines All traffic control devices in work zones must be crashworthy. The requirements and criteria can be found in the National Cooperative Highway Research Program (NCHRP), Report 350. It is required that Part 6 of the MMUTCD be followed to ensure that the signs used in work zones meet current standards. For closures in non-pedestrian areas a five (5) foot minimum bottom height is required and driven posts are suggested for long term closures. In pedestrian areas a seven (7) foot minimum bottom height is required. For visibility, signs should be placed within six (6) to twelve (12) feet of the edge of the traveled lane or no closer than two (2) feet to the back of curb. Existing permanent signing in the work zone which conflicts with temporary signs shall be covered during the work operation. Sign covers shall be removed when the work operation ceases. Signs should be covered so that the reflective material is not damaged. One example of how to cover a sign is given on page A46. Temporary signing shall be covered or removed when the work operation ceases (this is the source of most signing complaints). If a work zone is left unattended for any reason, all reduced speed signs, less than 60 mph, shall be removed, covered or laid down with legs off, unless it is determined that a lower speed limit must remain in place to maintain work zone safety/integrity. It is recommended that drums be used in long-term stationary and intermediate-term stationary work zones, instead of cones. Cones and drums should not be inter-mixed within the work zones. END ROAD WORK (G20-2) signs shall be used in all cases if the duration of a work zone is long- term stationary and intermediate-term stationary. It is important that the work zone be driven on a daily basis to ensure that the motorist will not be confused by the signing sequence, drums or cones and that all lighted arrows are aimed correctly.
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Warning Signs • The minimum size of all diamond shaped warning signs is 48" x 48". • Reflectorized signing is required. • All warning signs may be equipped with an orange or day-glo flag mounted above the sign. • Type A warning lights will not be required with the use of roll-up signs. • The “advance signing sequence” consists of three signs; ROAD WORK AHEAD (W20-1), INJURE/KILL WORKER (R5-18b) and TRAFFIC FINES DOUBLED (R5-18). Refer to pages A48 & A49 for proper signing sequence. Sign Spacing – “D” Distances The spacing between signs is based upon the permanently posted roadway speed. The sign spacing distances are minimums and may be adjusted to meet changing roadway and traffic conditions.
Table 1. Sign Spacing ("D" Distances)
Speed* “D” Distance Speed* “D” Distance (mph) (ft.) (mph) (ft.) 25 250 50 500 30 300 55 550 35 350 60 600 40 400 65 650 45 450 70 700 *Posted speed prior to work zone Tapers – “L” Lengths Whenever tapers are to be used near interchange ramps, crossroads, curves, or other influencing factors, it may be necessary to adjust the length of tapers, or extend the tangent section of the lane closure so the taper can be established in advance of these factors. Recommended minimum values for taper lengths, “L”, are shown in Table 2.
Table 2. Taper Lengths
Taper Posted Speed Limit, mph (Prior to Work Zone) Length, L (ft) 25 30 35 40 45 50 55 60 65 70 8 83 120 163 213 360 400 440 480 520 560 9 94 135 184 240 405 450 495 540 585 630 10 104 150 204 267 450 500 550 600 650 700
11 115 165 225 293 495 550 605 660 715 770
(ft) 12 125 180 245 320 540 600 660 720 780 840 13 135 195 266 347 585 650 715 780 845 910 14 146 210 286 374 630 700 770 840 910 980
Offset / Lane Width Offset / Lane 15 157 225 307 400 675 750 825 900 975 1050
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Cone and Drum Spacing for Channelization Spacing of channelizing devices, in feet, along the taper should not exceed the posted speed in miles per hour and twice the posted speed in the parallel area (e.g., a 45 mph posted speed road should normally have devices spaced no greater than 45 ft apart along the taper and 90 ft in the parallel section). Cones or drums on a tangent, to keep traffic out of the closed lane, should be spaced in accordance with the extent and type of activity, the speed limit of the roadway, and the vertical and horizontal alignment of the roadway. Buffer Space Buffer Space is a feature that separates traffic flow from the work activity. No equipment, materials or vehicles shall be stored in the buffer space. The shadow vehicle, if used, must be placed beyond the longitudinal buffer space.
Table 3. Buffer Space Length for Posted Speeds
Speed* Buffer Length Speed* Buffer Length (mph) (ft) (mph) (ft) 20 33 50 279 25 50 55 329 30 83 60 411 35 132 65 476 40 181 70 542 45 230 *Posted speed prior to work zone
Shadow Vehicle A shadow vehicle should be used for lane closures on all roadways which have 45 mph or greater posted speeds and two or more lanes in each direction. A shadow vehicle may be used in other work zones as deemed necessary. Factors to be considered in determining need include the following:
• Time of day of the closure • Seasonal variations in traffic volume • Length of lane closure and anticipated duration • Traffic speeds • Frequency of traffic stopping/turning movements
The shadow vehicle should be a loaded truck having 23,000 GVWR or greater with the brakes set, front wheels turned away from traffic and parked at the beginning of the roll-ahead space. The roll-ahead space is the space between the shadow vehicle and the work area. This additional space is needed only when a shadow vehicle is used.
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Table 4. Guidelines for Roll-Ahead Distances for Shadow Vehicles
Type of Prevailing Speed Weight of Shadow Roll-Ahead Activity (Posted Speed Prior to Work Vehicle Distance Zone) (Distance From Front of Shadow Vehicle to Work Area)
Mobile 45 mph 100 ft
50-55 mph 5 Tons 150 ft
60-70 mph 175 ft
Stationary 40 or Less 5.5 Tons 25 ft
45 mph 25 ft 12 Tons 50-55 mph 25 ft
60-70 mph 50 ft
Truck Mounted Attenuators (TMAs) It is the department’s goal that a TMA be used anytime a shadow vehicle is deemed necessary. See Appendix B for detailed information. Arrow Panels The Michigan Manual of Uniform Traffic Control Devices, states: "For stationary lane closure, the arrow panel should be located on the shoulder at the beginning of the merging taper. Where the shoulder is narrow, the arrow panel should be located in the closed lane."
Table 5. Arrow Display Types and Requirements
Panel Type Minimum Size Min. Legibility Minimum Number (in) Distance of Lighted (miles) Elements A 48 x 24 ½ 12 B 60 x 30 ¾ 13 C 96 x 48 1 15 D None* ½ 12 *Length of arrow equals 48in., width of arrowhead equals 24 in.
Type A arrow displays are appropriate for use on low-speed urban streets. Type B are appropriate for intermediate-speed facilities and for maintenance or mobile operations on high-speed roadways. Type C arrow displays are intended to be used on high-speed, high-volume traffic control projects. Type D arrow panels are intended for use on authorized vehicles. A Type D arrow panel shall conform to the shape of the arrow. An arrow display shall not be used on a two-lane, two-way roadway in the arrow mode. The panel shall display the caution mode (bar mode) when used on these roadways.
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When maintaining a standard lane closure (page A30), a Type C arrow panel should be used. When maintaining a standard lane closure with traffic regulators (page A11), the arrow for the closed lane should be a Type C arrow. The arrow used for the active lane should be either a Type B or Type C. See page (A1) for correct alignment of arrow bars. Partial Lane Closures Partial lane closures should be avoided. If any part of the lane is to be occupied, the whole lane should be closed. If the work within a closure moves more than two (2) miles from the original signing sequence, a new signing sequence should be set and the original set removed. Mobile Operations The following activities are considered to be mobile operations, any activities not included in Table 6 below should not use mobile traffic control.
Table 6. Mobile Maintenance Activities
Activity Description Work location
13200 Approach Sweeping Intersections
13400 Expressway Patrol Shoulder, and minor non-vehicular encroachment in traveled way 13500 Freeway Lighting Shoulder and/or occupy a lane 13600 Curb Sweeping Occupy lane, continuously mobile ≈ 5 mph 12200 Catch Basin Clean-out Occupy lane 12400 Litter Pickup Shoulder and outside shoulder 17200 Vegetation Control Shoulder 11100 Routine Blading Shoulder and minor non-vehicular encroachment in traveled way
11200 Gravel Shoulder Shoulder and minor non-vehicular Maintenance encroachment in traveled way 11400 Shoulder Spot Seal Shoulder, edge of metal Patching (kettle) 11400 Shoulder Bituminous Shoulder, edge of metal Patching
10300 Patrol Patching Drive on shoulder and minor non-vehicular encroachment in traveled way
Table 7 below should be used to help choose the appropriate mobile typical based on the location of work and its environment.
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Table 7. Traffic Typical Applications for Mobile Operations Location of Work Traffic Volume Sight Distance Typical (ADT) (Horizontal, Vertical) Outside Shoulder Freeway/Non-Freeway All Volumes n/a MD – 01 Shoulder Adequate MD – M11 <10,000 Non-Freeway Limited MD – M12 >10,000 n/a MD – M12 Adequate MD – M11 <10,000 Freeway Limited MD – M12 >10,000 n/a MD – M12 Shoulder (Minor Non-Vehicular Encroachment in Traveled Way)* Adequate MD – M11 <10,000 Non-Freeway Limited MD – M12 >10,000 n/a MD – M12
Freeway n/a n/a MD – M12
Roadway Adequate MD – M22 <10,000 Two-Lane, Two-Way Limited MD – M25 >10,000 n/a MD – M25 <50,000 n/a MD – M23 Multi-Lane w/ Shoulder >50,000 n/a MD – M24 Multi-Lane, Curbed All Volumes n/a MD – M21
* Minor non-vehicular encroachment in the traveled way is to be brief and not to exceed one lane of traffic from the median or outside shoulders.
Maintenance operations which involve minor non-vehicular encroachment on lanes other than those immediately adjacent to the median or outside shoulder are not considered mobile operations.
Any operations that do not fall within these parameters should be reviewed by your traffic and safety representative.
Adequate Sight Distance: For mobile operations, it is a length of roadway that the driver can see that is greater than or equal to the stopping sight distance as a function of the posted speed limit. See table 8 below.
Limited Sight Distance: For mobile operations, it is a length of roadway that the driver can see that is shorter than the stopping sight distance as a function of the posted speed limit. See table 8 below.
Table 8. Stopping Sight Distance as a Function of Posted Speed Limit Speed (mph) 25 30 35 40 45 Distance (ft) 200 250 305 360 425 Speed (mph) 50 55 60 65 70 Distance (ft) 495 570 645 730 820
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Definitions The following definitions are taken from the Michigan Manual of Uniform Traffic Control Devices.
Section 6G.02 Work Duration (MI) Support: Chapter 6D and Sections 6F.68 and 6G.05 contain additional information regarding the steps to follow when pedestrian or bicycle facilities are affected by the worksite. Work duration is a major factor in determining the number and types of devices used in work zones. The duration of a work zone is defined relative to the length of time a work operation occupies a spot location. Standard: The five categories of work duration and their time at a location shall be: A. Long-term stationary is work that occupies a location more than 3 days. B. Intermediate-term stationary is work that occupies a location more than one daylight period up to 3 days, or nighttime work lasting more than 1 hour. C. Short-term stationary is daytime work that occupies a location for more than 1 hour within a single daylight period. D. Short duration is work that occupies a location up to 1 hour. E. Mobile is work that moves intermittently or continuously.
Long-Term Stationary Work Support: At long-term stationary work zones, there is ample time to install and realize benefits from the full range of temporary traffic control procedures and devices that are available for use. Generally, larger channelizing devices, temporary roadways, and temporary traffic barriers are used. Guidance: Inappropriate markings in long-term stationary work zones should be removed and replaced with temporary markings. Standard: Since long-term operations extend into nighttime, retroreflective and/or illuminated devices shall be used in long-term stationary work zones.
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Intermediate-Term Stationary Work Support: In intermediate-term stationary work zones, it might not be feasible or practical to use procedures or devices that would be desirable for long-term stationary temporary traffic control zones, such as altered pavement markings, temporary traffic barriers, and temporary roadways. The increased time to place and remove these devices in some cases could significantly lengthen the project, thus increasing exposure time. In other instances, there might be insufficient pay- back time to economically justify more elaborate temporary traffic control measures. Standard: Since intermediate-term operations extend into nighttime, retroreflective and/or illuminated devices shall be used in intermediate-term stationary work zones.
Short-Term Stationary Work Support: Most maintenance and utility operations are short-term stationary work.
Short-Duration Work As compared to stationary operations, mobile and short-duration operations are activities that might involve different treatments. Devices having greater mobility might be necessary such as signs mounted on trucks. Devices that are larger, more imposing, or more visible can be used effectively and economically. The mobility of the work zone is important.
Maintaining reasonably safe work and road user conditions is a paramount goal in carrying out mobile operations. Guidance: Safety in short-duration or mobile operations should not be compromised by using fewer devices simply because the operation will frequently change its location. Option: Appropriately colored or marked vehicles with high-intensity rotating, flashing, oscillating, or strobe lights may be used in place of signs and channelizing devices for short-duration or mobile operations. These vehicles may be augmented with signs or arrow panels. Support: During short-duration work, it often takes longer to set up and remove the work zone than to perform the work. Workers face hazards in setting up and taking down the work zone. Also, since the work time is short, delays affecting road users are significantly increased when additional devices are installed and removed. Option: Considering these factors, simplified control procedures may be warranted for short-duration work. A reduction in the number of devices may be offset by the use of other more dominant devices such as highintensity rotating, flashing, oscillating, or strobe lights on work vehicles.
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Mobile Operations Support: Mobile operations often involve frequent short stops for activities such as litter cleanup, pothole patching, or utility operations, and are similar to short-duration operations. Guidance: Warning signs, high-intensity rotating, flashing, oscillating, or strobe lights on a vehicle, flags, and/or channelizing devices should be used and moved periodically to keep them near the mobile work area. Option: Traffic regulators may be used for mobile operations that often involve frequent short stops.
Support: Mobile operations also include work activities where workers and equipment move along the road without stopping, usually at slow speeds. The advance warning area moves with the work area. Guidance: When mobile operations are being performed, a shadow vehicle equipped with an arrow panel or a sign should follow the work vehicle, especially when vehicular traffic speeds or volumes are high. Where feasible, warning signs should be placed along the roadway and moved periodically as work progresses.
Under high-volume conditions, consideration should be given to scheduling mobile operations work during off-peak hours.
If there are mobile operations on a high-speed travel lane of a multi-lane divided highway, arrow panels should be used. Option: For mobile operations that move at speeds less than 5 km/h (3 mph), mobile signs or stationary signing that is periodically retrieved and repositioned in the advance warning area may be used.
At higher speeds, vehicles may be used as components of the work zones for mobile operations. Appropriately colored and marked vehicles with signs, flags, high-intensity rotating, flashing, oscillating, or strobe lights, truck-mounted attenuators, and arrow panels or portable changeable message signs may follow a train of moving work vehicles.
For some continuously moving operations, such as street sweeping and snow removal, a single work vehicle with appropriate warning devices on the vehicle may be used to provide warning to approaching road users. Standard: Mobile operations that move at speeds greater than 30 km/h (20 mph), such as pavement marking operations, shall have appropriate devices on the equipment (that is, high- intensity rotating, flashing, oscillating, or strobe lights, signs, or special lighting), or shall use a separate vehicle with appropriate warning devices.
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Work Zone Defined The following definitions are taken from the MICHIGAN VEHICLE CODE Act 300 of 1949.
257.79d “Work zone” defined.
Sec. 79d.
“Work zone” means a portion of a street or highway that meets any of the following:
(a) Is between a “work zone begins” sign and an “end road work” sign.
(b) For construction, maintenance, or utility work activities conducted by a work crew and more than 1 moving vehicle, is between a “begin work convoy” sign and an “end work convoy” sign.
(c) For construction, maintenance, surveying, or utility work activities conducted by a work crew and 1 moving or stationary vehicle exhibiting a rotating beacon or strobe light, is between the following points:
(i) A point that is 150 feet behind the rear of the vehicle or that is the point from which the beacon or strobe light is first visible on the street or highway behind the vehicle, whichever is closer to the vehicle.
(ii) A point that is 150 feet in front of the front of the vehicle or that is the point from which the beacon or strobe light is first visible on the street or highway in front of the vehicle, whichever is closer to the vehicle.
Revision: 2007
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Appendix A
Work Zone Traffic Control 2007.doc
Work Zone Traffic Control 2007.doc INCORRECT CORRECT USAGE USAGE
INCORRECT CORRECT USAGE USAGE
500' OR MORE
INCORRECT CORRECT USAGE USAGE
NOT TO SCALE
NOTE: USE OF LIGHTED ARROW EXERCISE CARE WHEN PLACING "LIGHTED ARROW" ON VERTICAL ON A HILL OR CURVE Michigan Department of Transportation OR HORIZONTAL CURVES. ADJUST ALIGNMENT OF "LIGHTED
OPERATIONS ARROW" TO ALLOW MAIN BEAM OF LAMPS TO BE SEEN BY DRIVER 01/01/07 PAGE FOR MAXIMUM EFFECTIVENESS. REV. DATE: MD - LAP A1
NOTES KEY NO SIGNS ARE REQUIRED IF DURATION IS SHORT-DURATION TYPE A WARNING FLASHER OR MOBILE. (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW IF THE OPERATION HAS A VEHICLE(S) PARKED ON THE SHOULDER, OR VEHICLES ACCESSING THE WORK SITE VIA THE HIGHWAY OR CROSSING THE HIGHWAY TO PERFORM OPERATIONS, A "ROAD WORK AHEAD" SIGN OR AN ARROW BOARD IN BAR MODE SHALL BE USED. WORK ROAD AHEAD W20-1
WORK AREA VARIES B D
SHOULDER
SHOULDER WORK ROAD AHEAD W20-1
SHOULDER
SHOULDER
WORK AREA VARIES B D
SHOULDER
SHOULDER
NOT TO SCALE
DURATION: APPLIES TO ALL DURATIONS
Michigan Department of Transportation WORK OUTSIDE SHOULDER OPERATIONS 01/01/07 PAGE
REV. DATE: MD - 01 A2 KEY
CHANNELIZING DEVICES ROAD WORK AHEAD LIGHTED ARROW PANEL (CAUTION MODE)
W20-1 TYPE A WARNING FLASHER D (REQUIRED ON PLYWOOD SIGNS)
SPEED TRAFFIC FLOW LIMIT REFLECTS EXISTING XX SPEED LIMIT R2-1 D
SPEED LIMIT XX R2-1
PLACE THROUGHOUT WORK AREA AS WORK AREA VARIES WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. B L 1/3 D
SPEED LIMIT XX R2-1 D
RIGHT SHOULDER CLOSED AHEAD SHOULDER SHOULDER
W21-5b D
ROAD WORK AHEAD
W20-1
NOT TO SCALE
DURATION: SHORT-TERM STATIONARY SHOULDER CLOSURE ON A Michigan Department of Transportation TWO-LANE, TWO-WAY ROADWAY OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 11a A3 KEY
CHANNELIZING DEVICES
ROAD LIGHTED ARROW PANEL WORK
AHEAD (CAUTION MODE)
D TYPE A WARNING FLASHER INJURE / W20-1 KILL A (REQUIRED ON PLYWOOD SIGNS) WORKER $7500 + TRAFFIC FLOW 15 YEARS D REFLECTS EXISTING R5-18b TRAFFIC FINES SPEED LIMIT DOUBLED IN WORK ZONES D R5-18 WORK END ZONE ROAD WORK BEGINS G20-2 R5-18c D SPEED LIMIT 2D XX
R2-1 D
SPEED LIMIT XX R2-1 WORK AREA VARIES
PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR
B CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. L 1/3
D SPEED LIMIT 2D XX
D R2-1
WORK END ROAD WORK ZONE BEGINS G20-2 D R5-18c RIGHT SHOULDER CLOSED AHEAD D
W21-5b TRAFFIC FINES DOUBLED IN WORK SHOULDER SHOULDER ZONES D INJURE / R5-18 KILL A WORKER $7500 + 15 YEARS D R5-18b ROAD WORK AHEAD
W20-1 NOT TO SCALE
DURATION: LONG-TERM STATIONARY, SHOULDER CLOSURE ON A INTERMEDIATE-TERM STATIONARY Michigan Department of Transportation TWO-LANE, TWO-WAY ROADWAY OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 11b A4 NOT TOSCALE Michigan DepartmentofTransportation OPERATIONS LIMIT SPEED W20-1 AHEAD XX R2-1 ROAD WORK
D D TWO-LANE, TWO-WAY ROADWAY SHOULDER SHOULDER CLOSUREONA WITH SPEEDREDUCTION
SHOULDER
1/3 D D D D L B WORK AREA VARIES D LIMIT SPEED XX R2-1 SPEED ZONE SHOULDER W21-5b REDUCED LIMIT SPEED W20-1 W3-5b CLOSED AHEAD XX AHEAD RIGHT AHEAD R2-1 ROAD WORK AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA MAJOR CROSSROADS LIMIT SPEED XX R2-1
DURATION: REV. DATE: 01/01/07
BEYOND WORKAREA REFLECTS SPEEDLIMIT REFLECTS EXISTINGSPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER (CAUTION MODE) LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY
SHORT DURATION SHORT-TERM STATIONARY,
MD -11c PAGE
A5 D
ROAD D INJURE$7500KILLWORKER A + / AHEADWORK D 15 YEARS TRAFFICDOUBLEDINW20-1FINES WORK D D LIGHTEDCHANNELIZING ARROW DEVICES PANEL BEGINSR5-18bZONEWORK R5-18ZONES D D ROADG20-2END WORK REFLECTSTRAFFIC(REQUIREDTYPE(CAUTIONKEY A WARNING FLOW MODE) SPEED EXISTINGON PLYWOOD FLASHERLIMIT SPEED SIGNS) LIMIT R5-18c SPEED WORK AREA VARIES SPEED BEYOND WORK AREA LIMITR2-1 B LIMITR2-1 L 1/3
D LIMITSPEED 2D ASPLACE WARRANTED THROUGHOUTR2-1 AND WORK AFTER AREA ALL XX D XXMAJOR CROSSROADS D
ROADEND WORK D LIMITSPEED XX D SHOULDERR2-1RIGHT ZONEWORK SHOULDER G20-2 SHOULDER CLOSEDAHEAD BEGINS D R5-18cSPEEDREDUCED ZONE D W21-5bTRAFFICDOUBLEDINXXFINESZONES WORK INJUREKILL AW3-5bAHEAD / NOTMichigan TO DepartmentOPERATIONS SCALE of Transportation TWO-LANE,SHOULDERWITH SPEED TWO-WAY CLOSURE REDUCTION ROADWAY ONW20-1R5-18AHEADROADWORK A 15R5-18b$7500WORKER YEARS + DURATION: REV. 01/01/07 DATE: INTERMEDIATE-TERMLONG-TERM MD STATIONARY, - 11d STATIONARY PAGE A6 NOT TOSCALE Michigan DepartmentofTransportation OPERATIONS W20-1 AHEAD ROAD WORK LIMIT SPEED XX R2-1 DIVIDED ROADWAY ORFREEWAY
SHOULDER SHOULDER CLOSUREONA NO SPEEDREDUCTION
SHOULDER
1/3 D D D D L B WORK AREA VARIES LIMIT SPEED XX R2-1 SHOULDER W21-5a SIGNS ARENOTINPLACE. ENTRANCE RAMPSIFPERMANENT AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA SHOULDER W21-5b CLOSED W20-1 CLOSED AHEAD RIGHT RIGHT AHEAD ROAD WORK LIMIT SPEED XX R2-1
DURATION:
REV. DATE: (REQUIRED ONPLYWOODSIGNS) (CAUTION MODE) TRAFFIC FLOW TYPE AWARNINGFLASHER LIGHTED ARROWPANEL 01/01/07 CHANNELIZING DEVICES KEY SPEED LIMIT REFLECTS EXISTING SHORT-TERM STATIONARY
MD -12a PAGE
A7 KEY
END END CHANNELIZING DEVICES ROAD WORK ROAD WORK LIGHTED ARROW PANEL G20-2 G20-2 (CAUTION MODE)
TYPE A WARNING FLASHER
2D (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW
REFLECTS EXISTING SPEED LIMIT
SPEED LIMIT SPEED LIMIT XX R2-1
XX PLACE THROUGHOUT WORK AREA
R2-1 WORK AREA VARIES AS WARRANTED AND AFTER ALL PLACE THROUGHOUT WORK AREA ENTRANCE RAMPS IF PERMANENT AS WARRANTED AND AFTER ALL SIGNS ARE NOT IN PLACE. ENTRANCE RAMPS IF PERMANENT B SIGNS ARE NOT IN PLACE. L 1/3 D SPEED SPEED LIMIT LIMIT XX XX R2-1 R2-1 D
WORK WORK ZONE ZONE BEGINS BEGINS R5-18c D R5-18c
RIGHT SHOULDER CLOSED
D W21-5a
RIGHT SHOULDER CLOSED AHEAD D W21-5b TRAFFIC TRAFFIC FINES FINES DOUBLED DOUBLED IN WORK IN WORK ZONES ZONES SHOULDER SHOULDER R5-18 D R5-18 INJURE / INJURE / KILL A KILL A WORKER WORKER $7500 + $7500 + 15 YEARS 15 YEARS
R5-18b D R5-18b
ROAD ROAD WORK WORK AHEAD AHEAD
W20-1 W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY, SHOULDER CLOSURE ON A INTERMEDIATE-TERM STATIONARY Michigan Department of Transportation DIVIDED ROADWAY OR FREEWAY OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 12b A8 NOT TOSCALE Michigan DepartmentofTransportation AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK OPERATIONS LIMIT SPEED XX R2-1 SPEED ZONE REDUCED LIMIT SPEED W3-5b W20-1 AHEAD XX AHEAD R2-1 ROAD WORK LIMIT SPEED XX R2-1 DIVIDED ROADWAYORFREEWAY
SHOULDER SHOULDER CLOSUREONA WITH AMAXIMUM 10MPH SPEED REDUCTION
SHOULDER
1/3 D D D D D L B WORK AREA VARIES D LIMIT SPEED XX R2-1 SPEED ZONE SHOULDER W21-5a SHOULDER W21-5b REDUCED LIMIT SPEED CLOSED W20-1 W3-5b CLOSED AHEAD RIGHT XX AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK AHEAD RIGHT AHEAD R2-1 ROAD WORK LIMIT SPEED XX R2-1
DURATION: REV. DATE: 01/01/07
(REQUIRED ONPLYWOODSIGNS) (CAUTION MODE) BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY SHORT DURATION SHORT-TERM STATIONARY,
MD -12c PAGE
A9 NOT TOSCALE Michigan DepartmentofTransportation AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK INJURE / 15 YEARS BEGINS R5-18b R5-18c $7500 + KILL A OPERATIONS WORKER ZONE WORK LIMIT SPEED XX R2-1 SPEED ZONE REDUCED W3-5b AHEAD ROAD WORK LIMIT LIMIT SPEED SPEED G20-2 TRAFFIC DOUBLED IN WORK W20-1 R5-18 XX XX AHEAD R2-1 R2-1 FINES ZONES ROAD WORK END DIVIDED ROADWAYORFREEWAY
SHOULDER SHOULDER CLOSUREONA WITH AMAXIMUM 10MPH SPEED REDUCTION
SHOULDER
1/3 D D D D D D D D L B WORK AREA VARIES D D ROAD WORK LIMIT SPEED G20-2 XX R2-1 END SHOULDER W21-5a BEGINS R5-18c LIMIT SPEED TRAFFIC DOUBLED IN WORK R5-18 CLOSED W20-1 XX AHEAD ZONE RIGHT WORK FINES ZONES R2-1 ROAD WORK AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK SPEED ZONE LIMIT SPEED INJURE / 15 YEARS R5-18b XX $7500 + KILL A SHOULDER W21-5b R2-1 WORKER REDUCED W3-5b CLOSED AHEAD RIGHT AHEAD
DURATION: REV. DATE: 01/01/07
(REQUIRED ONPLYWOODSIGNS) (CAUTION MODE) BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY INTERMEDIATE-TERM STATIONARY LONG-TERM STATIONARY,
MD -12d PAGE A10
ROAD WORK ONE LANE AHEAD ROAD AHEAD W20-1 W20-4
D
BE PREPARED D TO STOP
W20-7a W3-4
D
SPEED LIMIT D XX R2-1
100 ft200 TO ft
SPEED LIMIT XX R2-1
PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS SPEED ARE NOT IN PLACE. LIMIT XX R2-1
WORK AREA VARIES PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS SPEED ARE NOT IN PLACE. LIMIT XX 100' R2-1
50 ft TO 100 ft MAXIMUM D
BE PREPARED TO STOP
D W3-4
D W20-7a KEY
ONE LANE TRAFFIC REGULATOR ROAD AHEAD CHANNELIZING DEVICES
LIGHTED ARROW PANEL D W20-4
(CAUTION MODE)
SHOULDER SHOULDER ROAD TYPE A WARNING FLASHER WORK AHEAD (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW W20-1
REFLECTS EXISTING SPEED LIMIT NOT TO SCALE
DURATION: SHORT-TERM STATIONARY LANE CLOSURE FOR A TWO-LANE TWO-WAY ROADWAY Michigan Department of Transportation UTILIZING TRAFFIC REGULATORS, OPERATIONS 01/01/07 PAGE NO SPEED REDUCTION REV. DATE: MD - 21a A11 ROAD WORK AHEAD
TRAFFIC INJURE / FINES KILL A W20-1 DOUBLED WORKER IN WORK $7500 + ZONES 15 YEARS D
R5-18 R5-18b
D ONE LANE ROAD AHEAD D W20-7a W20-4 WORK D ZONE BE BEGINS PREPARED TO STOP R5-18c D
W3-4
SPEED D LIMIT
XX D R2-1
100 ft200 TO ft
SPEED END LIMIT ROAD WORK G20-2 XX 2D R2-1
PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR
CROSSROADS IF PERMANENT SIGNS SPEED ARE NOT IN PLACE. LIMIT XX R2-1 WORK AREA VARIES
PLACE THROUGHOUT WORK AREA AS SPEED WARRANTED AND AFTER ALL MAJOR LIMIT CROSSROADS IF PERMANENT SIGNS XX ARE NOT IN PLACE. 100' R2-1
50 ft TO 100 ft MAXIMUM D
WORK ZONE 2D BEGINS
D R5-18c BE END PREPARED ROAD WORK TO STOP G20-2 D W3-4 KEY
D TRAFFIC REGULATOR W20-7a ONE LANE ROAD CHANNELIZING DEVICES AHEAD
D LIGHTED ARROW PANEL TRAFFIC W20-4 (CAUTION MODE) FINES DOUBLED IN WORK TYPE A WARNING FLASHER ZONES
D (REQUIRED ON PLYWOOD SIGNS) INJURE / R5-18 SHOULDER SHOULDER KILL A TRAFFIC FLOW WORKER $7500 + 15 YEARS REFLECTS EXISTING D SPEED LIMIT R5-18b ROAD WORK AHEAD
W20-1 NOT TO SCALE
DURATION: LONG-TERM STATIONARY, LANE CLOSURE FOR A INTERMEDIATE-TERM STATIONARY TWO-LANE TWO-WAY ROADWAY Michigan Department of Transportation UTILIZING TRAFFIC REGULATORS, OPERATIONS 01/01/07 PAGE NO SPEED REDUCTION REV. DATE: MD - 21c A12 KEY ROAD WORK AHEAD CHANNELIZING DEVICES D INJURE / W20-1 KILL A STOP AND GO SIGNALS WORKER $7500 + 15 YEARS TEMPORARY PAVEMENT MARKING D TRAFFIC R5-18b (SOLID 24 " STOP BAR) FINES DOUBLED TYPE A WARNING FLASHER IN WORK TEMPORARY ZONES
D PAVEMENT (REQUIRED ON PLYWOOD SIGNS) R5-18 MARKINGS SHOULDER ONE LANE SHOULDER STROBE LIGHT (OPTIONAL) ROAD AHEAD
D TRAFFIC FLOW W20-4 REFLECTS EXISTING SPEED LIMIT END D ROAD WORK WORK W3-3 ZONE G20-2
BEGINS D
R5-18c SPEED D STOP LIMIT HERE ON 500 ft - 600
RED D XX 50 ft R2-1 R10-6
100 ft MAXIMUM
VERTICAL PANEL (L) VERTICAL PANEL (R)
TEMPORARY CONCRETE BARRIER
VERTICAL PANEL (R) VERTICAL PANEL (L)
100 ft MAXIMUM
STOP 50 ft SPEED HERE ON D LIMIT RED
XX D R10-6 R2-1 D WORK ZONE END BEGINS
ROAD WORK D
500 ft - 600 R5-18c G20-2 D W3-3 ONE LANE TEMPORARY ROAD AHEAD PAVEMENT D
MARKINGS W20-4 TRAFFIC FINES DOUBLED IN WORK ZONES D INJURE / R5-18 SHOULDER SHOULDER KILL A WORKER $7500 + 15 YEARS D R5-18b ROAD WORK AHEAD
W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY, INTERMEDIATE-TERM STATIONARY TEMPORARY TRAFFIC SIGNAL, Michigan Department of Transportation
OPERATIONS TWO-LANE, TWO-WAY ROADWAY 01/01/07 PAGE
REV. DATE: MD - 22 A13 KEY
CHANNELIZING DEVICES
LIGHTED ARROW PANEL
TYPE A WARNING FLASHER (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW ROAD WORK AHEAD REFLECTS EXISTING SPEED LIMIT
W20-1 D
SPEED LIMIT XX R2-1 D
SPEED LIMIT XX R2-1 WORK AREA VARIES PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR
B CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. L D
SPEED LIMIT XX R2-1 D
W4-2 D
RIGHT LANE CLOSED AHEAD
W20-5 D
ROAD WORK AHEAD
W20-1 SHOULDER SHOULDER
NOT TO SCALE
DURATION: SHORT-TERM STATIONARY ONE-LANE CLOSURE ON AN
Michigan Department of Transportation UNDIVIDED MULTI-LANE ROADWAY, OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 23a A14 ROAD WORK AHEAD KEY D
W20-1 INJURE / CHANNELIZING DEVICES KILL A WORKER LIGHTED ARROW PANEL
$7500 + 15 YEARS TYPE A WARNING FLASHER D R5-18b (REQUIRED ON PLYWOOD SIGNS) TRAFFIC FINES TRAFFIC FLOW DOUBLED IN WORK ZONES REFLECTS EXISTING D R5-18 SPEED LIMIT WORK ZONE END ROAD WORK BEGINS G20-2
R5-18c D SPEED LIMIT 2D XX D R2-1
SPEED LIMIT XX R2-1
WORK AREA VARIES PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR
B CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. L D
SPEED
2D LIMIT XX D R2-1 WORK END ROAD WORK ZONE BEGINS G20-2
D R5-18c D W4-2
RIGHT LANE CLOSED AHEAD D
W20-5 TRAFFIC FINES DOUBLED IN WORK ZONES D R5-18 INJURE / KILL A WORKER $7500 + 15 YEARS D R5-18b ROAD WORK AHEAD SHOULDER SHOULDER
W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY, ONE-LANE CLOSURE ON AN INTERMEDIATE-TERM STATIONARY
Michigan Department of Transportation UNDIVIDED MULTI-LANE ROADWAY, OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 23b A15 THISNO SPEED DIRECTION REDUCTION D TYPEKEYLIGHTEDCHANNELIZING A WARNING ARROW DEVICES PANEL FLASHER W20-1AHEADROADWORK D D BEYONDREFLECTSTRAFFIC (REQUIRED WORK FLOW EXISTINGSPEEDON AREA PLYWOOD LIMIT SPEED SIGNS) LIMIT
LIMITSPEED WORK AREA VARIES LIMITSPEED R2-1 B R2-1 L XX D XX MAJORASPLACE WARRANTED THROUGHOUTCROSSROADSLIMITSPEEDR2-1 AND WORK AFTER AREA ALL D
D LIMITSPEEDR2-1 XX D
SHOULDER SHOULDER REDUCEDW4-2 D SPEEDRIGHTW3-5bCLOSEDXXAHEADAHEAD LANEZONE NOTMichigan TO DepartmentOPERATIONS SCALE of Transportation UNDIVIDEDONE-LANEWITHSPEED A MULTI-LANE MAXIMUM CLOSUREREDUCTION 10 ROADWAY,ON MPH AN DURATION: W20-1W20-5 AHEADROADWORK REV. 01/01/07 DATE: SHORT-TERM MDREDUCTIONMAXIMUM STATIONARY - 23c 10MPH THIS SPEED DIRECTION PAGEA16 KEY ROAD CHANNELIZING DEVICES WORK D AHEAD TRAFFIC LIGHTED ARROW PANEL FINES DOUBLED TYPE A WARNING FLASHER W20-1 IN WORK (REQUIRED ON PLYWOOD SIGNS) ZONES
D R5-18 TRAFFIC FLOW INJURE / KILL A REFLECTS EXISTING SPEED LIMIT WORKER $7500 + REFLECTS SPEED LIMIT 15 YEARS BEYOND WORK AREA D R5-18b WORK END ZONE ROAD WORK BEGINS G20-2 D R5-18c D SPEED LIMIT SPEED XX LIMIT D R2-1 D XX R2-1
NO SPEED REDUCTION THIS DIRECTION SPEED LIMIT XX R2-1 WORK AREA VARIES
PLACE THROUGHOUT WORK AREA
B AS WARRANTED AND AFTER ALL MAJOR CROSSROADS L D SPEED LIMIT 2D XX D R2-1 WORK END ROAD WORK ZONE BEGINS G20-2
D R5-18c D W4-2
REDUCED SPEED ZONE AHEAD D W3-5b
RIGHT LANE CLOSED AHEAD SHOULDER SHOULDER D
W20-5 INJURE / KILL A WORKER $7500 + 15 YEARS D R5-18b TRAFFIC FINES MAXIMUM 10MPH SPEED DOUBLED REDUCTION THIS DIRECTION IN WORK ZONES ROAD
D WORK R5-18 AHEAD
W20-1 NOT TO SCALE
ONE-LANE CLOSURE ON AN DURATION: LONG-TERM STATIONARY, INTERMEDIATE-TERM STATIONARY UNDIVIDED MULTI-LANE ROADWAY, Michigan Department of Transportation WITH A MAXIMUM 10 MPH OPERATIONS 01/01/07 PAGE SPEED REDUCTION REV. DATE: MD - 23d A17 ROAD WORK AHEAD KEY W20-1 D CHANNELIZING DEVICES
LIGHTED ARROW PANEL
LEFT LANE TYPE A WARNING FLASHER CLOSED AHEAD (REQUIRED ON PLYWOOD SIGNS)
W20-5
D TRAFFIC FLOW
REFLECTS EXISTING SPEED LIMIT
W4-2 D
SPEED LIMIT XX R2-1 D
100 ft MINIMUM L B
SPEED SPEED LIMIT LIMIT XX XX R2-1 R2-1
PLACE THROUGHOUT WORK AREA AS PLACE THROUGHOUT WORK AREA AS WORK AREA VARIES WARRANTED AND AFTER ALL MAJOR WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS CROSSROADS IF PERMANENT SIGNS
ARE NOT IN PLACE. B ARE NOT IN PLACE. L
100 ft MINIMUM D
SPEED LIMIT XX R2-1 D
W4-2 D
LEFT LANE CLOSED
SHOULDER SHOULDER AHEAD
W20-5 D
ROAD WORK AHEAD
NOT TO SCALE W20-1
DURATION: SHORT-TERM STATIONARY CLOSURE FOR THE CENTER TWO LANES
Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY,
OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 24a A18 KEY ROAD WORK CHANNELIZING DEVICES AHEAD
D LIGHTED ARROW PANEL INJURE / W20-1 KILL A WORKER TYPE A WARNING FLASHER $7500 + (REQUIRED ON PLYWOOD SIGNS) 15 YEARS D TRAFFIC R5-18b FINES TRAFFIC FLOW DOUBLED IN WORK ZONES REFLECTS EXISTING D R5-18 SPEED LIMIT LEFT LANE CLOSED AHEAD D W20-5
END ROAD WORK D
W4-2 WORK G20-2 ZONE BEGINS 2D R5-18c D SPEED LIMIT
XX D R2-1 100 ft MINIMUM L B
SPEED SPEED LIMIT LIMIT XX XX R2-1 R2-1
PLACE THROUGHOUT WORK AREA AS WORK AREA VARIES PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL MAJOR WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS CROSSROADS IF PERMANENT SIGNS B ARE NOT IN PLACE. ARE NOT IN PLACE. L
100 ft MINIMUM D SPEED LIMIT XX D
2D R2-1 WORK ZONE BEGINS D END R5-18c ROAD WORK
G20-2 D W4-2 LEFT LANE CLOSED AHEAD D TRAFFIC W20-5 FINES DOUBLED IN WORK
SHOULDER SHOULDER ZONES D R5-18 INJURE / KILL A WORKER $7500 + 15 YEARS D R5-18b ROAD WORK AHEAD
W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY CLOSURE FOR THE CENTER TWO LANES INTERMEDIATE-TERM STATIONARY
Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY,
OPERATIONS WITH NO SPEED REDUCTION 01/01/07 PAGE
REV. DATE: MD - 24b A19 NOT TOSCALE Michigan DepartmentofTransportation MAJOR CROSSROADS AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA OPERATIONS LIMIT SPEED XX R2-1 100 ftMINIMUM SPEED ZONE LEFT LANE REDUCED W3-5b LIMIT SPEED W20-5 W20-1 CLOSED AHEAD AHEAD XX W4-2 AHEAD LIMIT R2-1 ROAD SPEED WORK XX OF AMULTI-LANEUNDIVIDED ROADWAY, R2-1 CLOSURE FORTHECENTERTWO LANES
D B L D D D D D WITH MAXIMUM 10MPH SPEED REDUCTION
SHOULDER
SHOULDER
D D D D D L B WORK AREA VARIES D 100 ftMINIMUM LIMIT SPEED XX R2-1 SPEED ZONE LEFT LANE LIMIT SPEED REDUCED W20-5 W20-1 W3-5b CLOSED XX AHEAD W4-2 R2-1 AHEAD AHEAD ROAD WORK
MAJOR CROSSROADS AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA DURATION: REV. DATE: 01/01/07 LIMIT SPEED XX R2-1
BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY SHORT-TERM STATIONARY
MD -24c PAGE A20
ROAD WORK AHEAD
D KEY INJURE / W20-1 KILL A WORKER CHANNELIZING DEVICES $7500 + 15 YEARS
D LIGHTED ARROW PANEL R5-18b TRAFFIC FINES DOUBLED TYPE A WARNING FLASHER IN WORK (REQUIRED ON PLYWOOD SIGNS) ZONES D R5-18 LEFT LANE TRAFFIC FLOW CLOSED AHEAD REFLECTS SPEED LIMIT D W20-5 BEYOND WORK AREA REDUCED SPEED ZONE AHEAD D
W3-5b
END ROAD WORK D
W4-2 WORK D G20-2 ZONE SPEED BEGINS LIMIT
R5-18c D SPEED XX D LIMIT R2-1
XX D R2-1 100 ft MINIMUM L B
SPEED LIMIT XX SPEED R2-1 LIMIT
XX WORK AREA VARIES PLACE THROUGHOUT WORK AREA R2-1 AS WARRANTED AND AFTER ALL B PLACE THROUGHOUT WORK AREA MAJOR CROSSROADS.
AS WARRANTED AND AFTER ALL L MAJOR CROSSROADS.
100 ft MINIMUM D SPEED LIMIT D SPEED XX LIMIT D R2-1 WORK XX ZONE D R2-1 BEGINS D END R5-18c ROAD WORK
G20-2 D W4-2 REDUCED SPEED ZONE AHEAD D W3-5b LEFT LANE CLOSED AHEAD SHOULDER SHOULDER D TRAFFIC W20-5 FINES DOUBLED IN WORK ZONES D INJURE / R5-18 KILL A WORKER
$7500 + ROAD 15 YEARS WORK D R5-18b AHEAD
W20-1 NOT TO SCALE
CLOSURE FOR THE CENTER TWO LANES DURATION: LONG-TERM STATIONARY INTERMEDIATE-TERM STATIONARY OF A MULTI-LANE UNDIVIDED ROADWAY, Michigan Department of Transportation WITH MAXIMUM 10 MPH OPERATIONS 01/01/07 PAGE SPEED REDUCTION REV. DATE: MD - 24d A21 KEY
CHANNELIZING DEVICES
LIGHTED ARROW PANEL
ROAD TYPE A WARNING FLASHER WORK (REQUIRED ON PLYWOOD SIGNS) AHEAD TRAFFIC FLOW
REFLECTS EXISTING
W20-1 D SPEED LIMIT
CENTER LANE CLOSED AHEAD
W20-5a D (MODIFIED) SPEED LIMIT XX R2-1 D
1/3 L B
SPEED SPEED LIMIT LIMIT XX XX
WORK AREA VARIES R2-1 R2-1
PLACE THROUGHOUT WORK AREA AS PLACE THROUGHOUT WORK AREA AS B WARRANTED AND AFTER ALL MAJOR WARRANTED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. ARE NOT IN PLACE. L
1/3 L D
SPEED LIMIT XX R2-1 D
D W4-2
CENTER & LEFT LANE CLOSED AHEAD
D W20-5a (MODIFIED)
ROAD
SHOULDER SHOULDER WORK AHEAD
W20-1
NOT TO SCALE
DURATION: SHORT-TERM STATIONARY CLOSURE FOR THE CENTER LANE AND ADJACENT THROUGH LANE Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY, OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE REV. DATE: MD - 25a A22 ROAD KEY WORK AHEAD CHANNELIZING DEVICES D INJURE / LIGHTED ARROW PANEL KILL A W20-1 WORKER TYPE A WARNING FLASHER $7500 + (REQUIRED ON PLYWOOD SIGNS) 15 YEARS D TRAFFIC FLOW TRAFFIC R5-18b FINES REFLECTS EXISTING DOUBLED IN WORK SPEED LIMIT ZONES D
CENTER R5-18 LANE CLOSED AHEAD D
W20-5a WORK END (MODIFIED) ZONE ROAD WORK BEGINS D SPEED R5-18c LIMIT 2D XX D R2-1
1/3 L B
SPEED SPEED LIMIT LIMIT XX XX
WORK AREA VARIES R2-1 R2-1
PLACE THROUGHOUT WORK AREA AS PLACE THROUGHOUT WORK AREA AS B INDICATED AND AFTER ALL MAJOR INDICATED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. ARE NOT IN PLACE. L
1/3 L
D SPEED LIMIT
2D XX D
R2-1 WORK ZONE END ROAD WORK BEGINS D R5-18c D
W4-2 CENTER & LEFT LANE CLOSED AHEAD D TRAFFIC FINES W20-5a DOUBLED (MODIFIED) IN WORK ZONES D R5-18 INJURE / KILL A WORKER $7500 +
SHOULDER SHOULDER 15 YEARS D
ROAD R5-18b WORK AHEAD
NOT TO SCALE W20-1
DURATION: LONG-TERM STATIONARY CLOSURE FOR THE CENTER LANE INTERMEDIATE-TERM STATIONARY AND ADJACENT THROUGH LANE Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY, OPERATIONS NO SPEED REDUCTION 01/01/07 PAGE REV. DATE: MD - 25b A23 KEY
CHANNELIZING DEVICES
LIGHTED ARROW PANEL
TYPE A WARNING FLASHER (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW
REFLECTS EXISTING SPEED LIMIT ROAD WORK REFLECTS SPEED LIMIT AHEAD BEYOND WORK AREA
W20-1 D
CENTER LANE CLOSED AHEAD
W20-5a D (MODIFIED) SPEED SPEED LIMIT LIMIT XX XX R2-1
D D R2-1
1/3 L B
SPEED SPEED LIMIT LIMIT XX XX R2-1
R2-1 WORK AREA VARIES
PLACE THROUGHOUT WORK AREA AS PLACE THROUGHOUT WORK AREA AS B INDICATED AND AFTER ALL MAJOR INDICATED AND AFTER ALL MAJOR CROSSROADS IF PERMANENT SIGNS CROSSROADS IF PERMANENT SIGNS ARE NOT IN PLACE. ARE NOT IN PLACE. L
1/3 L D
SPEED LIMIT XX
D R2-1 D W4-2
REDUCED SPEED ZONE AHEAD D W3-5b
CENTER & LEFT LANE CLOSED AHEAD D W20-5a (MODIFIED) ROAD SHOULDER SHOULDER WORK AHEAD
W20-1
NOT TO SCALE
DURATION: SHORT-TERM STATIONARY CLOSURE FOR THE CENTER LANE AND ADJACENT THROUGH LANE Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY, OPERATIONS WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07 PAGE REV. DATE: MD - 25c A24 KEY
CHANNELIZING DEVICES
LIGHTED ARROW PANEL
TYPE A WARNING FLASHER ROAD WORK (REQUIRED ON PLYWOOD SIGNS) AHEAD
D TRAFFIC FLOW INJURE / KILL A W20-1 REFLECTS EXISTING WORKER $7500 + SPEED LIMIT 15 YEARS D TRAFFIC REFLECTS SPEED LIMIT R5-18b FINES DOUBLED BEYOND WORK AREA IN WORK ZONES D CENTER R5-18 LANE CLOSED AHEAD END D ROAD WORK WORK W20-5a ZONE (MODIFIED) D BEGINS SPEED D SPEED R5-18c LIMIT LIMIT XX
XX D D R2-1 R2-1
1/3 L B
SPEED SPEED LIMIT LIMIT XX XX R2-1
R2-1 WORK AREA VARIES PLACE THROUGHOUT WORK AREA PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL
AS WARRANTED AND AFTER ALL B MAJOR CROSSROADS. MAJOR CROSSROADS. L
1/3 L
D SPEED LIMIT
D XX 2D WORK R2-1 ZONE BEGINS D
END R5-18c ROAD WORK D
REDUCED W4-2 SPEED ZONE AHEAD D
CENTER W3-5b & LEFT LANE CLOSED AHEAD D TRAFFIC FINES W20-5a DOUBLED IN WORK (MODIFIED) ZONES D INJURE / R5-18 KILL A WORKER $7500 + 15 YEARS D
ROAD R5-18b
SHOULDER SHOULDER WORK AHEAD
W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY CLOSURE FOR THE CENTER LANE INTERMEDIATE-TERM STATIONARY AND ADJACENT THROUGH LANE Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY, OPERATIONS WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07 PAGE REV. DATE: MD - 25d A25 NOT TOSCALE Michigan DepartmentofTransportation W20-1 AHEAD W4-2 ROAD WORK OPERATIONS ARE NOTINPLACE. CROSSROADS IFPERMANENTSIGNS INDICATED ANDAFTERALLMAJOR PLACE THROUGHOUTWORKAREAAS (MODIFIED) & LEFTLANE LIMIT SPEED W20-5a LIMIT SPEED XX R2-1 XX CENTER CLOSED R2-1 AHEAD OF AMULTI-LANE UNDIVIDEDROADWAY, D CLOSURE FORTHECENTERLANE AND ADJACENTTHROUGHLANES 1/3 L B L D D D NO SPEEDREDUCTION
SHOULDER
SHOULDER 1/3 L
DURATION: D D D L B WORK AREA VARIES REV. DATE: 01/01/07 D ARE NOTINPLACE. CROSSROADS IFPERMANENTSIGNS INDICATED ANDAFTERALLMAJOR PLACE THROUGHOUTWORKAREAAS (MODIFIED) & LEFTLANE
W20-5a LIMIT SPEED XX CENTER CLOSED TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY R2-1 SPEED LIMIT REFLECTS EXISTING AHEAD SHORT-TERM STATIONARY LIMIT SPEED XX R2-1
MD -26a W20-1 AHEAD W4-2 ROAD WORK PAGE A26
NOT TOSCALE Michigan DepartmentofTransportation (MODIFIED) & LEFTLANE INJURE / 15 YEARS BEGINS W20-5a R5-18b R5-18c $7500 + KILL A WORKER OPERATIONS CENTER CLOSED ZONE WORK AHEAD ARE NOTINPLACE. CROSSROADS IFPERMANENTSIGNS INDICATED ANDAFTERALLMAJOR PLACE THROUGHOUTWORKAREAAS ROAD WORK LIMIT SPEED LIMIT SPEED TRAFFIC DOUBLED IN WORK W20-1 XX R5-18 AHEAD R2-1 XX FINES ZONES W4-2 R2-1 ROAD WORK END OF AMULTI-LANE UNDIVIDEDROADWAY, D CLOSURE FORTHECENTERLANE AND ADJACENTTHROUGHLANES 1/3 L 2D B L D D D D D D NO SPEEDREDUCTION
SHOULDER
SHOULDER 1/3 L
DURATION: D D D D D D L B WORK AREA VARIES 2D REV. DATE: 01/01/07 D ARE NOTINPLACE. CROSSROADS IFPERMANENTSIGNS INDICATED ANDAFTERALLMAJOR PLACE THROUGHOUTWORKAREAAS ROAD WORK
TRAFFIC DOUBLED IN WORK LIMIT SPEED R5-18 W20-1 AHEAD XX FINES ZONES TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY R2-1 SPEED LIMIT REFLECTS EXISTING W4-2 ROAD WORK END INTERMEDIATE-TERM STATIONARY LONG-TERM STATIONARY LIMIT SPEED XX R2-1
(MODIFIED) MD -26b & LEFTLANE INJURE / 15 YEARS BEGINS R5-18c R5-18b $7500 + W20-5a KILL A WORKER ZONE WORK CENTER CLOSED AHEAD PAGE A27
NOT TOSCALE Michigan DepartmentofTransportation (MODIFIED) & LEFTLANE OPERATIONS W20-5a CENTER CLOSED W4-2 AHEAD MAJOR CROSSROADS. AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA SPEED ZONE W20-1 AHEAD REDUCED W3-5b ROAD WORK LIMIT SPEED AHEAD LIMIT SPEED XX LIMIT SPEED R2-1 XX R2-1 XX R2-1 WITH MAXIMUM 10MPHSPEEDREDUCTION OF AMULTI-LANE UNDIVIDEDROADWAY, 2D D D D D D CLOSURE FORTHECENTERLANE AND ADJACENTTHROUGHLANES 1/3 L B L
SHOULDER
SHOULDER 1/3 L
DURATION: D D D D L B WORK AREA VARIES D REV. DATE: 01/01/07 D SPEED ZONE
LIMIT SPEED LIMIT SPEED REDUCED W20-1 AHEAD W3-5b MAJOR CROSSROADS. AS WARRANTEDANDAFTERALL PLACE THROUGHOUTWORKAREA XX BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY XX R2-1 ROAD WORK AHEAD R2-1 SHORT-TERM STATIONARY
LIMIT SPEED XX R2-1 (MODIFIED) & LEFTLANE W20-5a MD -26c CENTER CLOSED W4-2 AHEAD PAGE A28
KEY ROAD WORK CHANNELIZING DEVICES AHEAD
D LIGHTED ARROW PANEL INJURE / KILL A W20-1 WORKER $7500 + TYPE A WARNING FLASHER 15 YEARS TRAFFIC D (REQUIRED ON PLYWOOD SIGNS) R5-18b FINES DOUBLED IN WORK TRAFFIC FLOW ZONES D CENTER & LEFT LANE R5-18 REFLECTS SPEED LIMIT CLOSED AHEAD BEYOND WORK AREA D REDUCED W20-5a SPEED ZONE (MODIFIED) AHEAD D W3-5b D WORK W4-2 END ZONE ROAD WORK BEGINS
D D G20-2 SPEED SPEED R5-18c LIMIT LIMIT D XX D XX R2-1 1/3 L R2-1 L B
SPEED LIMIT XX SPEED R2-1 LIMIT
XX WORK AREA VARIES PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL
R2-1 B MAJOR CROSSROADS. PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL
MAJOR CROSSROADS. L
1/3 L D D SPEED SPEED LIMIT LIMIT XX D XX D WORK R2-1 R2-1 END ZONE ROAD WORK BEGINS
G20-2 D R5-18c D REDUCED SPEED ZONE W4-2 AHEAD D CENTER W3-5b & LEFT LANE CLOSED TRAFFIC AHEAD D FINES DOUBLED W20-5a IN WORK ZONES (MODIFIED) SHOULDER SHOULDER D
R5-18 INJURE / KILL A WORKER
D $7500 + ROAD 15 YEARS WORK AHEAD R5-18b
W20-1
NOT TO SCALE
DURATION: LONG-TERM STATIONARY CLOSURE FOR THE CENTER LANE INTERMEDIATE-TERM STATIONARY AND ADJACENT THROUGH LANES Michigan Department of Transportation OF A MULTI-LANE UNDIVIDED ROADWAY, OPERATIONS WITH MAXIMUM 10 MPH SPEED REDUCTION 01/01/07 PAGE REV. DATE: MD - 26d A29 NOT TOSCALE Michigan DepartmentofTransportation OPERATIONS W4-2 AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK LIMIT SPEED XX R2-1 SPEED ZONE RIGHT LANE REDUCED LIMIT SPEED W3-5b W20-1 W20-5 AHEAD CLOSED XX AHEAD R2-1 ROAD WORK AHEAD LIMIT SPEED XX R2-1 ONE-LANE CLOSUREONAFREEWAY USING ASINGLESTEPDOWN IN SPEED LIMITWHERE EXISTING SPEED LIMIT IS 55MPH
SHOULDER
SHOULDER
2D 2D D D D L B WORK AREA VARIES D LIMIT LIMIT SPEED SPEED XX XX R2-1 R2-1 SPEED ZONE RIGHT LANE REDUCED W20-5 W3-5b CLOSED W20-1 AHEAD AHEAD AHEAD ROAD WORK
DURATION: REV. DATE: 01/01/07 AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK W4-2 LIMIT SPEED XX R2-1
BEYOND WORKAREA REFLECTS SPEEDLIMIT REFLECTS EXISTINGSPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY SHORT-TERM STATIONARY
MD -27c PAGE A30
NOT TOSCALE Michigan DepartmentofTransportation INJURE / 15 YEARS OPERATIONS R5-18b $7500 + LIMIT SPEED KILL A WORKER XX W4-2 R2-1 LIMIT SPEED XX R2-1 AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK LIMIT SPEED XX R2-1 SPEED ZONE RIGHT LANE BEGINS R5-18c W20-1 AHEAD TRAFFIC DOUBLED IN WORK REDUCED R5-18 ROAD WORK W3-5b W20-5 ROAD WORK ZONE WORK FINES ZONES CLOSED AHEAD G20-2 AHEAD END ONE-LANE CLOSUREONAFREEWAY USING ASINGLESTEPDOWN IN SPEED LIMITWHERE EXISTING SPEED LIMIT IS 55MPH
SHOULDER
SHOULDER
D D 2D 2D D D D D L B WORK AREA VARIES D D SPEED ZONE RIGHT LANE BEGINS R5-18c TRAFFIC DOUBLED REDUCED IN WORK W20-5 R5-18 ZONE WORK W3-5b ROAD WORK W20-1 CLOSED AHEAD FINES ZONES AHEAD AHEAD G20-2 ROAD WORK
END DURATION: REV. DATE: 01/01/07 LIMIT SPEED LIMIT SPEED XX XX R2-1 R2-1 INTERMEDIATE-TERM INJURE / AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK 15 YEARS R5-18b $7500 + KILL A LIMIT WORKER SPEED W4-2 XX R2-1
LIMIT BEYONDWORKAREA LEGEND REFLECTSSPEED TRAFFIC FLOW (REQUIRED) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY
MD -27d STATIONARY PAGE A31
NOT TOSCALE Michigan DepartmentofTransportation AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK SPEED ZONE LIMIT SPEED OPERATIONS XX LIMIT REDUCED SPEED R2-1 W3-5b XX AHEAD R2-1 R2-1a 45 PRESENT WORKERS RIGHT LANE WHERE W20-1 W20-5 AHEAD CLOSED W4-2 ROAD WORK AHEAD LIMIT SPEED XX R2-1 EXISTING SPEED LIMITIS70MPHORLESS "WHERE WORKERSPRESENT" ANDASINGLE ONE-LANE CLOSUREONAFREEWAY USING STEP DOWNIN SPEEDLIMITWHEN
SHOULDER
SHOULDER
2D D D D D L D D WORK AREA VARIES D BUFFER BUFFER LIMIT SPEED XX R2-1 RIGHT LANE R2-1a 45 PRESENT WORKERS W20-1 AHEAD WHERE W20-5 ROAD W4-2 WORK CLOSED AHEAD
DURATION: REV. DATE: 01/01/07 SPEED ZONE LIMIT SPEED XX LIMIT SPEED R2-1 REDUCED W3-5b XX R2-1 AHEAD
BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY SHORT-TERM STATIONARY R2-1a 45 PRESENT WORKERS WHERE
MD -27e RAMPS AFTER ALLENTRANCE WARRANTED AND WORK AREAAS PLACE THROUGHOUT PAGE A32
NOT TOSCALE Michigan DepartmentofTransportation AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK LIMIT SPEED XX R2-1 INJURE / 15 YEARS OPERATIONS R5-18b $7500 + LIMIT SPEED KILL A WORKER XX W4-2 R2-1 LIMIT SPEED R2-1a 45 PRESENT WORKERS XX R2-1 WHERE SPEED ZONE RIGHT LANE BEGINS R5-18c W20-1 AHEAD TRAFFIC DOUBLED IN WORK REDUCED R5-18 ROAD WORK W3-5b W20-5 ROAD WORK ZONE WORK FINES ZONES CLOSED AHEAD G20-2 AHEAD END EXISTING SPEED LIMITIS70MPHORLESS "WHERE WORKERSPRESENT" ANDASINGLE ONE-LANE CLOSUREONAFREEWAY USING STEP DOWNIN SPEEDLIMITWHEN
SHOULDER
SHOULDER
D D 2D 2D D D D D L D D WORK AREA VARIES D D BUFFER BUFFER ROAD WORK SPEED ZONE RIGHT LANE BEGINS G20-2 R5-18c R2-1a 45 PRESENT WORKERS TRAFFIC DOUBLED REDUCED IN WORK W20-5 R5-18 ZONE WORK W3-5b W20-1 LIMIT CLOSED SPEED AHEAD WHERE END FINES ZONES AHEAD AHEAD ROAD WORK XX R2-1
DURATION: REV. DATE: 01/01/07 LIMIT SPEED XX R2-1 INTERMEDIATE-TERM INJURE / 15 YEARS R5-18b $7500 +
KILL A LIMIT WORKER SPEED BEYOND WORKAREA REFLECTS SPEEDLIMIT TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY W4-2 XX R2-1 R2-1a 45 PRESENT WORKERS WHERE
MD -27f RAMPS AFTER ALLENTRANCE WARRANTED AND WORK AREAAS PLACE THROUGHOUT STATIONARY PAGE A33
END END ROAD WORK ROAD WORK
G20-2 G20-2 D SPEED SPEED LIMIT LIMIT XX
XX D R2-1 R2-1
SPEED WHERE SPEED WHERE WORKERS WORKERS LIMIT PRESENT LIMIT PRESENT PLACE THROUGHOUT WORK AREA AS WARRANTED AND AFTER ALL
XX 45 VARIES XX 45 ENTRANCE RAMPS.
R2-1 R2-1a WORK AREA R2-1 R2-1a PLACE THROUGHOUT WORK AREA WHERE
AS WARRANTED AND AFTER ALL D WORKERS
ENTRANCE RAMPS. BUFFER PRESENT D
BUFFER 45 R2-1a L D SPEED SPEED LIMIT LIMIT
XX D XX
R2-1 WORK WORK R2-1 ZONE ZONE BEGINS BEGINS D R5-18c R5-18c D
W4-2 REDUCED REDUCED W4-2 SPEED ZONE SPEED ZONE AHEAD AHEAD D
W3-5b 5300 ft W3-5b RIGHT LANE RIGHT LANE CLOSED CLOSED AHEAD AHEAD
W20-5 W20-5
RIGHT LANE RIGHT LANE CLOSED CLOSED 1 MILE 1 MILE
W20-5 W20-5 (MODIFIED) (MODIFIED)
RIGHT LANE 5300 ft CLOSED 2 MILES RIGHT LANE W20-5 CLOSED (MODIFIED) 2 MILES W20-5 D (MODIFIED) TRAFFIC TRAFFIC FINES FINES KEY DOUBLED DOUBLED IN WORK IN WORK ZONES CHANNELIZING DEVICES ZONES D INJURE / INJURE / R5-18 R5-18 KILL A KILL A LIGHTED ARROW PANEL WORKER WORKER $7500 + $7500 + TYPE A WARNING FLASHER 15 YEARS 15 YEARS D (REQUIRED ON PLYWOOD SIGNS) ROAD R5-18b R5-18b ROAD
WORK WORK TRAFFIC FLOW AHEAD AHEAD
SHOULDER SHOULDER LEGEND REFLECTS SPEED W20-1 W20-1 LIMIT BEYOND WORK AREA NOT TO SCALE
DURATION: LONG-TERM STATIONARY ONE-LANE CLOSURE ON A FREEWAY USING "WHERE WORKERS PRESENT" AND A SINGLE Michigan Department of Transportation
OPERATIONS STEP DOWN IN SPEED LIMIT WHEN 01/01/07 PAGE
EXISTING SPEED LIMIT IS 70 MPH OR LESS REV. DATE: MD - 27g A34 NOT TOSCALE Michigan DepartmentofTransportation W4-2 OPERATIONS W4-2 SPEED ZONE TWO LANES W20-5a LIMIT LIMIT SPEED SPEED W20-1 AHEAD REDUCED CLOSED XX XX ROAD WORK W3-5b AHEAD R2-1 R2-1 LEFT AHEAD EXISTING SPEED LIMITIS70MPHORLESS "WHERE WORKERSPRESENT" ANDASINGLE TWO-LANE CLOSUREONAFREEWAY USING STEP DOWNIN SPEEDLIMITWHEN
SHOULDER
SHOULDER
2D 2D D D D L D L D D WORK AREA VARIES D BUFFER BUFFER LIMIT SPEED XX R2-1
SPEED ZONE 2L LIMIT SPEED REDUCED TWO LANES W20-5a W3-5b XX W20-1 AHEAD R2-1 AHEAD CLOSED ROAD WORK AHEAD LEFT R2-1a 45 PRESENT WORKERS WHERE LIMIT SPEED XX R2-1
DURATION: W4-2 W4-2 REV. DATE: 01/01/07 R2-1a 45 PRESENT WORKERS WHERE
LIMIT BEYONDWORKAREA LEGEND REFLECTSSPEED TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER LIGHTED ARROWPANEL CHANNELIZING DEVICES KEY
SHORT-TERM STATIONARY AFTER ALLENTRANCERAMPS AREA ASWARRANTEDAND PLACE THROUGHOUTWORK
MD -28c PAGE A35
WORK AREA VARIES B
EXIT
E5-1
ORANGE AND BLACK
(OPTIONAL)
SHOULDER SHOULDER KEY
CHANNELIZING DEVICES
TYPE A WARNING FLASHER
MINIMUM 300' GAP (REQUIRED ON PLYWOOD SIGNS) INCREASE AS NECESSARY
TRAFFIC FLOW 200'
EXIT OPEN
E5-2 ORANGE AND BLACK
(OPTIONAL)
SHOULDER SHOULDER
NOT TO SCALE
DURATION: LONG-TERM STATIONARY INTERMEDIATE-TERM STATIONARY SINGLE LANE CLOSURE ON FREEWAY SHORT-TERM STATIONARY THROUGH ENTRANCE RAMP AREA 01/01/07 PAGE
REV. DATE: MD - 31 A36 KEY
CHANNELIZING DEVICES
TYPE A WARNING FLASHER (REQUIRED ON PLYWOOD SIGNS)
TRAFFIC FLOW WORK AREA VARIES
SPEED WHERE WORKERS LIMIT PRESENT 45 R2-1 R2-1a B
PLACE ADDITIONAL SUPPLEMENTAL SETS OF SPEED LIMIT SIGNS THROUGHOUT THE WORK AREA AS WARRANTED.
WHERE TRAFFIC CONDITIONS WARRANT OR AS DIRECTED BY THE TSC OR REGION TRAFFIC REPRESENTATIVE, A "YIELD" AND "YIELD AHEAD" SIGNS OR A "STOP" AND
MINIMUM 400' GAP - INCREASE AS NECESSARY "STOP AHEAD" SIGNS MAY BE USED. D
WORK ZONE BEGINS
R5-18c D
ROAD SHOULDER SHOULDER WORK AHEAD
W20-1 SHOULDER
ADVANCED SIGNING AND CHANNELIZING SHALL CONFORM TO THE TYPICAL FOR A SINGLE LANE CLOSURE NOT TO SCALE
DURATION: LONG-TERM STATIONARY INTERMEDIATE-TERM STATIONARY
Michigan Department of Transportation SINGLE LANE CLOSURE ON FREEWAY SHORT-TERM STATIONARY
OPERATIONS THROUGH ENTRANCE RAMP AREA 01/01/07 PAGE
REV. DATE: MD - 32 A37 BE PREPARED TO STOP W20-7 OR SHOULDER SHOULDER W20-7a W20-15 (IF NEEDED) D WORK ZONE D BEGINS
R5-18c
D
SLOW ONLY (OPTIONAL FOR USE IN HIGH TRAFFIC AREAS) VARIES WORK AREA
W20-7a
D
KEY TRAFFIC FINES TYPE A WARNING FLASHER DOUBLED IN WORK (REQUIRED ON PLYWOOD SIGNS) ZONES
R5-18 LIGHTED ARROW PANEL
D (BAR MODE)
INJURE / KILL A TRAFFIC REGULATOR WORKER $7500 + 15 YEARS
R5-18b D
RAMP WORK AHEAD
W20-1 (MODIFIED) OR W20-1 SHOULDER SHOULDER
NOT TO SCALE
DURATION: LONG-TERM STATIONARY INTERMEDIATE-TERM STATIONARY TRAFFIC CONTROL PLAN FOR WORK Michigan Department of Transportation SHORT-TERM STATIONARY
OPERATIONS OPERATIONS ON EXIT RAMPS 01/01/07 PAGE
REV. DATE: MD - 33 A38 KEY
VEHICLE FROM WHICH WORK IS BEING PERFORMED
TRAFFIC FLOW
150' 150'
NOTES
AT A MINIMUM, TRAFFIC CONTROL SHALL CONSIST OF AN APPROPRIATELY SAFETY COLORED VEHICLE (OR A VEHICLE WITH CONSPICUITY TAPE ON BOTH SIDES AND THE REAR) WITH A ROTATING BEACON. NO SIGNS OR CHANNELIZING DEVICES ARE REQUIRED.
THE FOLLOWING FACTORS SHOULD BE CONSIDERED IN DETERMINING THE NEED FOR ADDITIONAL ADVANCE WARNING:
1. TRAFFIC VOLUME
2. POSTED AND OPERATING SPEED LIMITS
SHOULDER SHOULDER 3. HORIZONTAL AND VERTICAL ALIGNMENTS
4. URBAN OR RURAL SITE
NOT TO SCALE
DURATION: MOBILE SHOULDER WORK WITH
Michigan Department of Transportation TRAFFIC VOLUMES LESS THAN 10,000 OPERATIONS AND ADEQUATE SIGHT DISTANCES 01/01/07 PAGE REV. DATE: MD - M11 A39 NOT TOSCALE (CAUTION MODE) LIGHTED ARROWPANEL (CAUTION MODE) LIGHTED ARROWPANEL Michigan DepartmentofTransportation OPERATIONS
SHOULDER SHOULDER DIVIDED ROADWAY ORFREEWAY SHOULDER WORKONA
SHOULDER SHOULDER
ROLL ROLL D AHEAD WORK AREA VARIES D AHEAD WORK AREA VARIES SPACE SPACE W20-1 W20-1 AHEAD AHEAD ROAD ROAD WORK WORK BOARD INBARMODESHALLBEUSED. OPERATIONS, AROADWORKAHEADSIGNORANARROW VIA THEHIGHWAYORCROSSINGTOPERFORM SHOULDER ORAVEHICLE(S)ACCESSINGTHEWORKSITE IF THEOPERATIONHASAVEHICLE(S)PARKEDON WORK ISBEINGDONEINTHEAREA. W20-1 SIGNSTOINDICATETHEPUBLICTHAT WITH EITHERFLASHINGORROTATINGLIGHTSOPTIONAL THERE MUSTBEEITHERANAPPROPRIATELYMARKEDVEHICLE NOTES (OPTIONAL) (OPTIONAL)
DURATION: DURATION:
ATTENUATOR AND OPTIONALTRUCKMOUNTED FLASHING ORROTATINGLIGHTS SHADOW VEHICLEWITH TRAFFIC FLOW (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER (CAUTION MODE) LIGHTED ARROWPANEL KEY REV. DATE: TWO-LANE, TWO-WAYROADWAY 01/01/07 SHOULDER WORKONA SHORT DURATION,MOBILE SHORT DURATION,MOBILE
MD -M12 PAGE A40
KEY
LIGHTED ARROW PANEL
TYPE A WARNING FLASHER
(REQUIRED ON PLYWOOD SIGNS) CURB CURB CURB
TRAFFIC FLOW
SHADOW VEHICLE WITH FLASHING OR ROTATING LIGHTS AND OPTIONAL TRUCK MOUNTED ATTENUATOR
WORK AREA VARIES ROLL SPACE AHEAD 1 MILE MAXIMUM
ROAD WORK AHEAD
W20-1
NOTES
"ROAD WORK AHEAD" SIGN SHALL BE WITHIN CURB CURB CURB ONE MILE OF WORK AREA.
THIS DETAIL IS ONLY ALLOWED IN AREAS WITHOUT SHOULDERS AND SPEED LIMITS OF 45 MPH OR LESS.
USED FOR PATROLLING, MINOR PATCHING AND OTHER ACTIVITIES IN AREAS WITH CURBED ROADWAY.
NOT TO SCALE
LANE CLOSURE OF DURATION: SHORT DURATION, MOBILE MULTI-LANE ROADWAY Michigan Department of Transportation
OPERATIONS WITH CURBS AND SPEED LIMITS 01/01/07 PAGE
45 MPH OR LESS REV. DATE: MD - M21 A41 KEY
WORK VEHICLE / SHADOW VEHICLE SHOULDER SHOULDER
TRAFFIC FLOW
WORK VEHICLE TMA (OPTIONAL) VARIES WORK AREA SPACE ROLL AHEAD
SHADOW VEHICLE TMA (OPTIONAL) LIGHTED ARROW PANEL IN BAR MODE (OPTIONAL) SHOULDER SHOULDER
NOT TO SCALE
DURATION: MOBILE MOBILE OPERATION Michigan Department of Transportation
OPERATIONS ON A TWO-LANE ROADWAY 01/01/07 PAGE
REV. DATE: MD - M22 A42 KEY
LIGHTED ARROW PANEL
TRAFFIC FLOW
WORK VEHICLE WITH FLASHING OR ROTATING LIGHTS VEHICLE THREE WORK VEHICLE TMA OPTIONAL
END WORK CONVOY
R5-18e VARIES WORK AREA
VEHICLE TWO SPACE SHADOW VEHICLE ROLL AHEAD WITH TMA < 650'
VEHICLE ONE SHADOW VEHICLE TMA OPTIONAL
BEGIN WORK CONVOY R5-18d SHOULDER SHOULDER
NOT TO SCALE
DURATION: SHORT DURATION, MOBILE MOBILE OPERATION ON Michigan Department of Transportation MULTI-LANE ROADWAY OPERATIONS 01/01/07 PAGE
REV. DATE: MD - M23 A43 KEY
LIGHTED ARROW PANEL PLACE "END WORK CONVOY" SIGN ON LAST VEHICLE TRAFFIC FLOW
IN WORK AREA WORK VEHICLE WITH FLASHING
END WORK CONVOY OR ROTATING LIGHTS AND OPTIONAL R5-18e TRUCK MOUNTED ATTENUATOR
WORK AREA VARIES
VEHICLE FOUR (OPTIONAL) TMA (OPTIONAL) ROLL SPACE AHEAD
VEHICLE THREE WITH TMA < 650'
VEHICLE TWO WITH TMA, MAY STRADDLE SHOULDER < 650'
VEHICLE ONE TMA (OPTIONAL)
BEGIN WORK CONVOY R5-18d SHOULDER SHOULDER
NOT TO SCALE
DURATION: SHORT DURATION, MOBILE
URBAN FREEWAY OPERATION Michigan Department of Transportation
OPERATIONS 01/01/07 PAGE
REV. DATE: MD - M24 A44 NOT TOSCALE Michigan DepartmentofTransportation OPERATIONS W20-7a 2 MILES W20-1 AHEAD ROAD WORK NEXT ONE LANE PREPARED W20-15 TO STOP W20-4 AHEAD ROAD BE
350' URBAN * D D D
ON ATWO-LANE ROADWAY 500' RURAL MOVING LANECLOSURE
SHOULDER
SHOULDER
ROLL D D D * 350' URBAN AHEAD WORK AREA 500' RURAL SPACE VARIES ONE LANE PREPARED W20-15 TO STOP W20-4 AHEAD ROAD BE W20-1
AHEAD 2.0 MILES (MAX.) ROAD WORK
DURATION: W20-7a 2 MILES NEXT REV. DATE: TRAFFIC REGULATORSHALLBEPICKEDUP. W20-7a SIGNSCLOSERTHAN"D"TOTHE REGULATOR ANDW20-7aSIGNSDECREASES, THE DISTANCEBETWEENTRAFFIC ON THESIDEOPPOSITEWORKAREAAS NOTES SHALL BEADDEDTOTHESEQUENCE. LAST W20-7aSIGNANOTHER OPERATION MOVES1/2MILEBEYONDTHE OR W20-15SIGNINTHESEQUENCE.AS "D" DISTANCEBEYONDTHELASTW20-7a REGULATOR SHALLSTAYAMINIMUMOF ADDED TOTHESEQUENCE.TRAFFIC DISTANCE AHEADPLACARD)SHALLBE ADDITIONAL W20-7ASIGN(WITHOUTTHE * IFTHEDISTANCEEXCEEDS1/2MILEAN 01/01/07
TRAFFIC REGULATOR TRUCK MOUNTEDATTENUATOR OR ROTATINGLIGHTSANDOPTIONAL SHADOW VEHICLEWITHFLASHING (REQUIRED ONPLYWOODSIGNS) TYPE AWARNINGFLASHER TRAFFIC FLOW LIGHTED ARROWPANEL(BARMODE) KEY SHORT DURATION,MOBILE
MD -M25 PAGE A45
RUBBER SPACERS - SIZE AND POSITION TO HOOK BRACKET REST AGAINST NON-REFLECTIVE BORDER.
SIGN
SIGN COVER 1/4 " PLYWOOD
2" X 2"
TIE TO SIGN POSTS TO ENSURE COVER 2" X 2" 4" X 6" WOOD POST TILTS AWAY FROM (LEGS CAN ALSO BE MADE SIGN FACE. OF ALUMINUM ANGLE)
THIS COVER IS PRIMARILY DESIGNED TO COVER SPEED LIMIT SIGNS ON FREEWAYS. IF YOU ARE TRYING TO COVER ANOTHER KIND OF SIGN, PLEASE CONTACT TSC OR REGION TRAFFIC REPRESENTATIVE.
NOT TO SCALE
Michigan Department of Transportation SIGN COVER OPERATIONS 01/01/07 PAGE
REV. DATE: MD - COVER A46 DISTANCE BETWEEN TRAFFIC SIGNS "D"
"D" POSTED SPEED LIMIT, MPH (PRIOR TO WORK AREA) DISTANCES 25 3O 35 4O 45 5O 55 6O 65 7O
D (FEET) 25O 3OO 35O 4OO 45O 5OO 55O 6OO 65O 7OO
GUIDELINES FOR LENGTH OF LONGITUDINAL BUFFER SPACE "B"
"B" POSTED SPEED LIMIT, MPH (PRIOR TO WORK AREA) LENGTHS 25 3O 35 4O 45 5O 55 6O 65 7O
B (FEET) 50 83 132 181 230 279 329 411 476 542
MINIMUM MERGING TAPER LENGTH "L" (FEET)
OFFSET POSTED SPEED LIMIT, MPH (PRIOR TO WORK AREA) FEET 25 3O 35 4O 45 5O 55 6O 65 7O
8 83 12O 163 213 36O 4OO 44O 48O 52O 56O
9 94 135 184 24O 4O5 45O 495 54O 585 63O 1O 1O4 15O 2O4 267 45O 5OO 55O 6OO 65O 7OO 11 115 165 225 293 495 55O 6O5 66O 715 77O 12 125 18O 245 32O 54O 6OO 66O 72O 78O 84O 13 135 195 266 347 585 650 715 780 845 910 "L" IN FEET
14 146 210 286 374 630 700 770 840 910 980 TAPER LENGTH 15 157 225 307 400 675 750 825 900 975 1050
THE FORMULAS FOR THE MINIMUM LENGTH OF A TYPES OF TAPERS TAPER LENGTH MERGING TAPER IN DERIVING THE "L" VALUES UPSTREAM TAPERS SHOWN IN THE ABOVE TABLES ARE AS FOLLOWS: MERGING TAPER L - MINIMUM
2 "L" = W x S WHERE POSTED SPEED PRIOR TO SHIFTING TAPER 1/2 L - MINIMUM 60 THE WORK AREA IS 40 MPH OR LESS SHOULDER TAPER 1/3 L - MINIMUM TWO-WAY TRAFFIC TAPER 100 ' - MAXIMUM "L" = W x S WHERE POSTED SPEED PRIOR TO THE WORK AREA IS 45 MPH OR GREATER DOWNSTREAM TAPERS 100 ' - MINIMUM (USE IS OPTIONAL) (PER LANE) L = MINIMUM LENGTH OF MERGING TAPER S = POSTED SPEED LIMIT IN MPH PRIOR TO WORK AREA W = WIDTH OF OFFSET
NOT TO SCALE
Michigan Department of Transportation
OPERATIONS 01/01/07 PAGE
REV. DATE: MD - TABLES A47 NO SPEED REDUCTION THROUGH WORK ZONE
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D APPROPRIATE TYPICAL D D L B WORK AREA VARIES
SPEED XXX ROAD LIMIT WORK XXX AHEAD XXX
R2-1 W20-1 XX-X EXISTING SPEED
REDUCED SPEED THROUGH WORK ZONE
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D APPROPRIATE TYPICAL D D L B WORK AREA VARIES D
SPEED SPEED XXX ROAD LIMIT LIMIT WORK XXX AHEAD XXX
R2-1 R2-1 W20-1 XX-X REDUCED EXISTING SPEED SPEED
REDUCED SPEED THROUGH WORK ZONE USING "WHERE WORKERS PRESENT"
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D APPROPRIATE TYPICAL D D L B B WORK AREA VARIES D
SPEED WHERE SPEED ROAD XXX WORKERS LIMIT PRESENT LIMIT WORK XXX AHEAD XXX 45 R2-1 R2-1a R2-1 W20-1 XX-X REDUCED EXISTING NOT TO SCALE SPEED SPEED
DURATION: SHORT-TERM STATIONARY WORK ZONE SIGNING SEQUENCE Michigan Department of Transportation AND SETUP OPERATIONS 01/01/07 PAGE
REV. DATE: MD - WZSH A48 NO SPEED REDUCTION THROUGH WORK ZONE
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D D APPROPRIATE TYPICAL D D L B WORK AREA VARIES 2D
INJURE / TRAFFIC WORK SPEED END XXX ROAD KILL A FINES ROAD WORK XXX ZONE DOUBLED LIMIT WORK WORKER XXX BEGINS AHEAD $7500 + IN WORK 15 YEARS ZONES G20-2 XX-X R5-18c R5-18b R5-18 R2-1 W20-1 EXISTING SPEED
REDUCED SPEED THROUGH WORK ZONE
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D D APPROPRIATE TYPICAL D D L B WORK AREA VARIES D D
INJURE / TRAFFIC WORK SPEED SPEED END ROAD KILL A FINES XXX ROAD WORK XXX ZONE LIMIT LIMIT WORK WORKER DOUBLED XXX BEGINS AHEAD $7500 + IN WORK 15 YEARS ZONES G20-2 XX-X R5-18c R5-18b R5-18 R2-1 R2-1 W20-1 REDUCED EXISTING SPEED SPEED
REDUCED SPEED THROUGH WORK ZONE USING "WHERE WORKERS PRESENT"
SHOULDER
SHOULDER
REMAINING SIGNING SEQUENCE PER D D APPROPRIATE TYPICAL D D L B B WORK AREA VARIES D D
INJURE / TRAFFIC WORK SPEED WHERE SPEED END XXX ROAD KILL A FINES WORKERS ROAD WORK XXX ZONE DOUBLED LIMIT PRESENT LIMIT WORK WORKER XXX BEGINS AHEAD $7500 + IN WORK G20-2 15 YEARS ZONES 45 XX-X R5-18c R5-18b R5-18 R2-1 R2-1a R2-1 W20-1 REDUCED EXISTING NOT TO SCALE SPEED SPEED
DURATION: LONG-TERM STATIONARY WORK ZONE SIGNING SEQUENCE INTERMEDIATE-TERM STATIONARY Michigan Department of Transportation AND SETUP OPERATIONS 01/01/07 PAGE
REV. DATE: MD - WZLG A49 WHERE WORKERS PRESENT D SPEED 45 LIMIT R2-1a
D XX R2-1
MAJOR INTERSECTION
WHERE WORKERS PRESENT 45 SUPPLEMENTAL SET OF SPEED LIMIT SIGNS ARE REQUIRED WHEN MAJOR INTERSECTIONS R2-1a
D ARE MORE THAN 2 MILES APART, SUCH THAT NO SETS OF THESE SPEED LIMIT SIGNS ARE SPEED EVER PLACED MORE THAN 2 MILES APART. LIMIT D
XX LESS THAN 4 MILES GREATER THAN 2 MILES R2-1
WHERE WORKERS PRESENT
D 45 SPEED R2-1a LIMIT
D XX R2-1
MAJOR INTERSECTION 2 MILES
WHERE LESS THAN WORKERS PRESENT
D 45 SPEED R2-1a LIMIT
D XX R2-1
MAJOR INTERSECTION 2 MILES KEY LESS THAN CHANNELIZING DEVICES
TRAFFIC FLOW D WHERE WORKERS BUFFER PRESENT PERMANENT SIGNS
MAY EXIST D 45
BUFFER R2-1a PART OF LEAD IN
SIGNING SEQUENCE L SPEED REQUIRED AFTER MAJOR LIMIT
INTERSECTIONS D XX R2-1
NOT TO SCALE
TYPICAL TEMPORARY TRAFFIC CONTROL FOR SUPPLEMENTAL SPEED LIMIT Michigan Department of Transportation TREATMENT ON A TWO-WAY ROADWAY WHERE OPERATIONS 01/01/07 PAGE WORKERS PRESENT REV. DATE: MD - WWP 1 A50
WHERE WHERE WORKERS WORKERS KEY PRESENT PRESENT CHANNELIZING DEVICES 45 D D 45 SPEED TRAFFIC FLOW R2-1a SPEED R2-1a LIMIT LIMIT REQUIRED AFTER ALL XX D D XX ENTRANCE RAMPS R2-1 R2-1 SHOULDER SHOULDER
ENTRANCE RAMP WHERE WORKERS PRESENT 45 * D
R2-1a SPEED D SHOULDER LIMIT XX * D D R2-1
CROSSROAD
D D WHERE WHERE SPEED SPEED WORKERS WORKERS LIMIT LIMIT PRESENT PRESENT *SUPPLEMENTAL SET OF SPEED LIMIT SIGNS ARE REQUIRED WHEN ENTRANCE RAMPS ARE MORE THAN 2 MILES APART, SUCH THAT NO SET OF THESE SPEED LIMIT SIGNS ARE EVER PLACED MORE THAN 2 MILES APART.
45 XX D D XX 45 R2-1a R2-1 R2-1 R2-1a
ENTRANCE RAMP
SHOULDER SHOULDER SHOULDER
NOT TO SCALE
TYPICAL TEMPORARY TRAFFIC CONTROL FOR SUPPLEMENTAL SPEED LIMIT Michigan Department of Transportation
OPERATIONS TREATMENT ON LIMITED ACCESS ROADWAYS 01/01/07 PAGE WHERE WORKERS PRESENT REV. DATE: MD - WWP 2 A51
Work Zone Traffic Control 2007.doc
Appendix B
Work Zone Traffic Control 2007.doc
Work Zone Traffic Control 2007.doc
Guidelines for Truck Mounted Attenuator Used by Maintenance Forces Working on MDOT Projects
The following guidelines have been developed to provide MDOT maintenance forces guidance on typical applications, equipment and operation of TMAs (Truck Mounted Attenuator). TMAs are devices that are mounted to the rear of a truck which may reduce the impact of a rear-end collision.
Examples of TMA application TMAs should be considered for use when maintenance operations are conducted where the posted speeds are 45 mph or greater; where personnel and/or equipment occupy a lane customarily used by traffic. Following are other work and traffic scenarios that could warrant the use of a TMA. • When shadow vehicles are used as a protective vehicle. • Operations requiring aerial work on scaffolding, lifts, hoists, bucket trucks, etc., that are exposed to moving traffic that require a stationary lane closure. Due to the danger associated with aerial work it is recommended that TMAs be considered for work on roadways with speeds less than 45 mph. • When conducting moving/intermittent operations such as sign installations, luminaire installations, etc. • Implementing lane closures, traffic shift operations, painting operations, etc. • Placing/retrieving traffic control devices related to work zone activities.
Exception: The use of a TMA while performing the installation and maintenance of a traffic signal is not recommended.
Equipment Requirements TMA All TMA’s used shall meet or exceed the requirements of NCHRP 350 test level 2 or test level 3 as described below for work zone traffic control devices.
A TMA rated for (NCHRP 350 – Test Level 2) may be used on non-freeway roadways with a normal posted speed of 40 mph or less. Test Level 2 TMA’s shall be prohibited for use on all freeways, non-freeway roadways, and work zones with posted speed limits of 45 mph or greater.
A TMA rated for (NCHRP 350 – Test Level 3) shall be utilized on freeways, non-freeway roadways and work zones with posted speed limits of 45 mph or greater. Test Level 3 TMA’s may be used on all roadways and work zones regardless of the posted speed limit.
The face of the TMA, visible to approaching traffic shall have reflectorized alternating yellow and black stripes, sloping downwards in both directions from the center of the attenuator.
Vehicle Stationary Operation: This work shall consist of furnishing a vehicle with the required gross vehicle weight as shown in the tables below and installing and operating a truck mounted attenuator according to the manufacturer’s recommendations. Material loaded onto the vehicle to obtain the required gross weight shall be securely attached to the vehicle. Hazardous materials will not be B1 Work Zone Traffic Control 2007.doc allowed on this vehicle. Materials that will be off loaded and incorporated into the maintenance activities shall not be considered part of the vehicle gross weight. The TMA shall not be mounted on a lift vehicle that is used in an aerial maintenance operation.
Mobile Operation: This work shall consist of furnishing a vehicle with the required gross vehicle weight as shown in the tables below and installing and operating a truck mounted attenuator according to the manufacturer’s recommendations. Material loaded onto the vehicle for transport or during work operations shall be securely attached to the vehicle. Hazardous materials will not be allowed on this vehicle. Materials that will be off loaded and incorporated into the maintenance activities shall not be considered part of the vehicle gross weight.
Operation and Placement of TMAs Operation The TMA shall be operated as per manufacturer’s recommendations, and/or as directed by the maintenance supervisor. This includes, but is not limited to, the following: • The height from the bottom of the TMA to the roadway surface shall be 12 inches (+/- 1 inch). • The TMA shall be parallel (level) with the roadway surface. • The manufacturers of the approved TMAs recommend a shoulder harness and headrest to be provided for the operator of the TMA vehicle. For stationary operations, when operating the vehicle with the attenuator installed, the vehicle shall be in gear if it has a standard transmission (park if an automatic transmission), with the brakes set and steering wheels turned away from the work area and traffic, if possible.
Placement Refer to the Maintenance Guidelines: Work Zone Traffic Control for proper placement of the TMA. Additional guidance on the proper placement of TMAs may also be found in the manufacturer’s documentation and/or as directed by the maintenance supervisor. In a traffic control operation the TMA vehicle should be the first vehicle encountered by the motorist. Please note that some operations require more than one TMA. The number of TMAs required are based on the number of lanes that are closed. An additional TMA may be used on the shoulder of urban freeways.
The use of a TMA does not eliminate or reduce the requirement for the correct application of traffic control devices and measures outlined in the Maintenance Guidelines: Work Zone Traffic Control. If there is a need or desire to use TMAs in situations not covered in the documents mentioned previously, placement requirements will be as directed by the maintenance supervisor.
TMAs should not be used as an attenuator for a temporary/permanent barrier ending except during barrier installation. Other types of attenuators will provide better and broader attenuation characteristics.
Refer to Table 1 or Table 2 below for the proper roll-ahead distance of the TMA vehicle.
B2 Work Zone Traffic Control 2007.doc
TABLE 1: Test Level 2 – Guidelines for Roll-ahead Distance for TMA Vehicles
Weight of TMA Vehicle Prevailing Speed (mph) Roll-Ahead Distance* (Posted Speed Prior to (Distance from front of TMA Work Zone) Vehicle to Work Area)
5.5 Tons 40 or Less 25 ft (Stationary) * Roll-ahead distances are calculated using a 4,410 pound impact vehicle weight.
TABLE 2: Test Level 3 – Guidelines for Roll-ahead Distance for TMA Vehicles
Weight of TMA Vehicle Prevailing Speed (mph) Roll-Ahead Distance* (Posted Speed Prior to (Distance from front of TMA Work Zone) Vehicle to Work Area)
5 Tons 60-70 175 ft 50-55 150 ft (Mobile) 45 100 ft
12 Tons 60-70 50 ft 50-55 25 ft (Stationary) 45 25 ft
* Roll-ahead distances are calculated using a 10,000 pound impact vehicle weight.
B3 Work Zone Traffic Control 2007.doc