Roundabout Planning, Design, and Operations Manual
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Continuous Flow Intersection, Parallel Flow Intersection, and Upstream Signalized Crossover
Comparison of Three Unconventional Arterial Intersection Designs: Continuous Flow Intersection, Parallel Flow Intersection, and Upstream Signalized Crossover Seonyeong Cheong, Saed Rahwanji, and Gang-Len Chang Abstract— This research is aimed to evaluate and world have adopted many conventional measures, including compare the operational performance of three signal planning and double left-turn lanes, for alleviating this unconventional intersections: Continuous Flow problem [1]. The using of these conventional measures are Intersection (CFI), Parallel Flow Intersection (PFI) and limited as the modifications of intersection design, such as Upstream Signalized Crossover (USC). For this purpose, widening interchanges and building bypasses, are expensive various experimental designs, including traffic conditions, and disruptive [1]. In contrast, the unconventional arterial geometric features and signal plans, were set and the intersection design (UAID) is one of the methods that can average delays were compared for movements of efficiently reduce the congestion with less cost as compare through-only traffic and left-turn-only traffic. From the with the conventional measures. General principles of results of analysis, all three unconventional intersections operation and management strategies of the UAID include: 1) outperformed conventional one and among the emphasis on through traffic movements along the arterial; 2) unconventional intersections, CFI outperformed the reduction in the number of signal phases (e.g. left-turn arrow others except for some traffic conditions. In the balanced phase); and 3) reduction in the number of intersection conflict traffic condition scenario, at the low traffic volume level, points [2]. These principles allow the UAID to reduce the the average delays of through traffic for PFI were smaller traffic congestion at the intersection and improve the traffic than that of CFI and very similar at the moderate traffic safety. -
City Maintained Street Inventory
City Maintained Streets Inventory DATE APPROX. AVG. STREET NAME ACCEPTED BEGINNING AT ENDING AT LENGTH WIDTH ACADEMYText0: ST Text6: HENDERSONVLText8: RD BROOKSHIREText10: ST T0.13 Tex20 ACADEMYText0: ST EXT Text6: FERNText8: ST MARIETTAText10: ST T0.06 Tex17 ACTONText0: WOODS RD Text6:9/1/1994 ACTONText8: CIRCLE DEADText10: END T0.24 Tex19 ADAMSText0: HILL RD Text6: BINGHAMText8: RD LOUISANAText10: AVE T0.17 Tex18 ADAMSText0: ST Text6: BARTLETText8: ST CHOCTAWText10: ST T0.16 Tex27 ADAMSWOODText0: RD Text6: CARIBOUText8: RD ENDText10: OF PAVEMENT T0.16 Tex26 AIKENText0: ALLEY Text6: TACOMAText8: CIR WESTOVERText10: ALLEY T0.05 Tex12 ALABAMAText0: AVE Text6: HANOVERText8: ST SWANNANOAText10: AVE T0.33 Tex24 ALBEMARLEText0: PL Text6: BAIRDText8: ST ENDText10: MAINT T0.09 Tex18 ALBEMARLEText0: RD Text6: BAIRDText8: ST ORCHARDText10: RD T0.2 Tex20 ALCLAREText0: CT Text6: ENDText8: C&G ENDText10: PVMT T0.06 Tex22 ALCLAREText0: DR Text6: CHANGEText8: IN WIDTH ENDText10: C&G T0.17 Tex18 ALCLAREText0: DR Text6: SAREVAText8: AVE CHANGEText10: IN WIDTH T0.18 Tex26 ALEXANDERText0: DR Text6: ARDIMONText8: PK WINDSWEPTText10: DR T0.37 Tex24 ALEXANDERText0: DR Text6: MARTINText8: LUTHER KING WEAVERText10: ST T0.02 Tex33 ALEXANDERText0: DR Text6: CURVEText8: ST ARDMIONText10: PK T0.42 Tex24 ALLENText0: AVE 0Text6:/18/1988 U.S.Text8: 25 ENDText10: PAV'T T0.23 Tex19 ALLENText0: ST Text6: STATEText8: ST HAYWOODText10: RD T0.19 Tex23 ALLESARNText0: RD Text6: ELKWOODText8: AVE ENDText10: PVMT T0.11 Tex22 ALLIANCEText0: CT 4Text6:/14/2009 RIDGEFIELDText8: -
Road to Resilience Delivering a Robust Local Roads Network
Road to resilience Delivering a robust local roads network December 2018 Road to resilience | Delivering a robust local roads network 3 Foreword Local roads are often, rightly, described as the lifeblood of local Balfour Beatty has a proud history of working on roads of all sizes, economies across the country, keeping transport flowing around across the country. The local authorities we work with are doing towns and cities and supporting local supply chains. their utmost to ensure the resilience of their local roads and to repair the damage caused by the harsh winter. Indeed, according Unfortunately, they also bear the brunt of congestion, which can to the Local Government Association (LGA), local authorities fix a have a significant impact on the productivity – or otherwise – of pothole every 21 seconds1. Where our local authority partners have those local economies, and on air quality, due to the needless secured additional capital investment for their roads, we have emissions from vehicles waiting in queues. The difference seen a reduction on revenue expenditure, and public satisfaction between the condition of local roads and the Strategic Roads improving. The money announced at the Autumn Budget will Network (SRN) is now significant in some areas, and is noticeable therefore be extremely welcome. to motorists. It will of course be important to ensure that this much-needed The backlog of maintenance on these roads, due to years of extra money is made to go as far as it can – that advances in underinvestment, is made worse by pothole problems which technology are capitalised on and that local authorities and the arise after harsh winters, further squeezing already constrained industry work together as closely as possible to drive efficiencies. -
American Title a Sociation ~ ~
OFFICIAL PUBLICATION AMERICAN TITLE A SOCIATION ~ ~ VOUJME XXXVI JUNE, 1957 NUMBER 6 TITLE NEWS Official Publication of THE AMERICAN TITLE ASSOCIATION 3608 Guardian Building-Detroit 26, Michigan Volume XXXVI June, 1957 Number 6 Table of Contents Introduction-The Federal Highway Program ......... ... ................ .. .................... 2 J. E. Sheridan Highway Laws Relating to Controlled Access Roads ..... .. ....... ........... 6 Norman A. Erbe Title Companies and the Expanded Right of Way Problems ...... ............. .. 39 , Daniel W. Rosencrans Arthur A. Anderson Samuel J. Some William A . Thuma INTRODUCTION The Federal Highway Program J. E. SHERIDAN We are extremely grateful to Nor veloped its planning sufficiently to man A. Erbe, Attorney General of the show to the satisfaction of the dis State of Iowa, for permission to re trict engineer the effect of the pro print his splendid brief embracing posed construction upon adjace.nt the highway laws of various states property, the treatment of access con relating to the control in access roads. trol in the area of Federal acquisi Mr. Erbe originally presented this m tion, and that appropriate arrange narrative form before the convention ments have been made for mainte of the Iowa Title Association in May nance and supervision over the land of this year. As is readily ascertain to be acquired and held in the name able, this is the result of a compre of the United States pending transfer hensive study of various laws touch· of title and jurisdiction to the State ing on the incidents of highway regu or the proper subdivision thereof." lations. Additionally, we are privi It is suggested that our members leged to carry the panel discussion bring this quoted portion to the at of the American Right of Way Asso tention of officers of the Highway ciation Convention held in Chicago, Department and the office of its legal May 16 and 17, dealing with "Title division, plus the Office of the Attor Companies and the Expanded Right ney General within the members' ju of Way Problems". -
Petition For/Request to Initiate Vacation of Public Highway, Street, Alley Or Easement Requirements and Process Overview
Petition for/request to initiate vacation of public highway, street, alley or easement Requirements and process overview The City of St. Louis Park will vacate public highways, streets, alleys or easements if it is found that the city has no current or future need for these lands. Proceedings to vacate such land may be commenced by petition of a majority of the owners of property fronting upon the portion of the public highway, street, alley or easement to be vacated, by action of the St. Louis Park City Council or by recommendation of the St. Louis Park Planning Commission. In order to constitute a petition for vacation, a majority of abutting property owners of the portion of public highway or street to be vacated must appear on the petition form. If the request is for vacation of a public alley or easement, it must be signed by the majority of owners of property adjacent to the alley or easement in the block where the alley or easement is situated, whether or not the petition requests vacation of the entire alley or easement. The petition shall be filed with the city clerk. If the application represents a request to the planning commission to recommend and to the city council to initiate vacation, that must be specifically stated. The applicant is encouraged to discuss the proposal with community development staff prior to completion of final plans and filing of a petition/request. Submittal checklist ☐ Petition/request ☐ Filing fee (see application for fee schedule) ☐ A complete and accurate legal property description must be submitted if the property to be vacated is an easement. -
A Study of Occurrence of Potholes and Washboards on Soil-Aggregate Roads EUGENE Y
A Study of Occurrence of Potholes and Washboards on Soil-Aggregate Roads EUGENE Y. HUANG, Associate Professor of Civil Engineering, University of Illinois This report presents the results of a study aimed at determining some of the circumstances associated with the occurrence of potholes and washboards on soil-aggregate roads. The study consisted of a statistical analysis of the qualitative data obtained from a road condition survey involving road surfaces of the coarse-graded aggregate type composed of mineral aggregate such as gravel or crushed stone and some binder material. Results of the study indicate that the occurrence of potholes and washboards was definitely associated with the volume of traffic, the type of surface material, and the drainage condition of the road surface. Although the findings are admittedly limited to the types and conditions of the roads studied, it is hoped that the data may be of value in further understanding the formation of potholes and washboards. • THE OCCURRENCE of potholes and washboards has long been a serious problem in soil-aggregate surfaces. These formations, however, have not been fully explained. Potholes on road surfaces are irregularly occurring, well-defined holes consisting of fairly deep cavities up to about 5 in. (Fig. 1). Washboards are transverse or nearly transverse waves on road surfaces, generally about 1 to 1/4 in. in amplitude andspaced about 2 or 3 ft apart (Fig. 2), regardless of the nature of material in which they occur. (Although typical formations of potholes and washboards are readily distinguishable, there are, however, numerous possibilities of transitional forms between these two typical forms.) Both potholes and washboards are conducive to surface impact and vibration, which contribute in a great measure to the rapid deterioration of the road surface as well as the vehicle itself. -
Mr. Gupta Detailed the Current Status of India's Road Network and Its
Mr. Gupta detailed the current status of India’s road network and its maintenance: “The total length of the road network in India is 4.69 million km. It is the second largest road network in the world, just after the United States. ….. The national highways constitute 82,000 kilometers, 1.7 percent of the total length, and carry 40 percent of the total traffic.” “65 percent of total traffic and 90 percent of passenger traffic are being serviced by roads. The corresponding figures in the 1950s were 12 percent and 31.6 percent. The compounded annual growth rate of traffic on roads during the last two decades has been 9 percent. Road maintenance, however, is not commensurate with the traffic growth rate.” “The Indian Constitution assigns responsibility for the national highway network to the central government while State governments are responsible for developing and maintaining the state highways, major district roads, other district roads, and village roads. ….. The Ministry of Road Transport & Highways is the apex organization in the road sector in the country responsible for the planning, development, and maintenance of the national highways. It extends technical and financial support to state governments for the development of state roads, the connectivity of roads of interest and economic importance; it evolves the standards and specifications for roads and bridges in the country.” “Several road development programs are being implemented in the country. The first, the National Highway Development Program, is one of the world's largest road development programs. It comprises seven phases of development of more than 55,000 km of national highways; of which 21,000 km of road length has already been completed.” “Another is the Rural Road Development Program fully funded by the central government to supplement the efforts of the state governments in the construction and maintenance of the rural road network. -
Principles of Design
Principles of Design Balance Proportion/Scale Emphasis Rhythm Introduction The principles of design are essential to the development and production of clothing used by individuals and families around the world. Each principle has a specific role in creating an aesthetically pleasing garment or ensemble. The principles of design consist of: balance, proportion (also referred to as scale), emphasis, and rhythm. When a garment or ensemble uses the elements and principles of design to create a visual unity, harmony is achieved. Garments often integrate more than one principle, while drawing from the elements of design to create a cohesive look. The following discussion will present background information on each of the principles of design and applications to clothing design and construction. Balance According to Wolfe (2011) balance implies that there is an equilibrium or uniformity among the parts of a design (p. 205). To achieve balance, a garment or ensemble should have equal visual weight throughout the design. The use of structural features, added embellishments, or decorations to a garment contribute to the appearance of a garment or ensemble being balanced or not. A clothing designer can utilize surface designs on fabric to construct a garment creating visual balance. Further, color, line, and texture can impact the balance of a design. For example, cool and light colors have less visual weight than dark, warm colors. If an individual is wearing a small amount of a dark, warm color it can be balanced out with a larger amount of cool, light colors. Balance used in clothing design can be categorized into two groups: Formal and Informal Balance. -
FHWA Bikeway Selection Guide
BIKEWAY SELECTION GUIDE FEBRUARY 2019 1. AGENCY USE ONLY (Leave Blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED February 2019 Final Report 4. TITLE AND SUBTITLE 5a. FUNDING NUMBERS Bikeway Selection Guide NA 6. AUTHORS 5b. CONTRACT NUMBER Schultheiss, Bill; Goodman, Dan; Blackburn, Lauren; DTFH61-16-D-00005 Wood, Adam; Reed, Dan; Elbech, Mary 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION VHB, 940 Main Campus Drive, Suite 500 REPORT NUMBER Raleigh, NC 27606 NA Toole Design Group, 8484 Georgia Avenue, Suite 800 Silver Spring, MD 20910 Mobycon - North America, Durham, NC 9. SPONSORING/MONITORING AGENCY NAME(S) 10. SPONSORING/MONITORING AND ADDRESS(ES) AGENCY REPORT NUMBER Tamara Redmon FHWA-SA-18-077 Project Manager, Office of Safety Federal Highway Administration 1200 New Jersey Avenue SE Washington DC 20590 11. SUPPLEMENTARY NOTES 12a. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE This document is available to the public on the FHWA website at: NA https://safety.fhwa.dot.gov/ped_bike 13. ABSTRACT This document is a resource to help transportation practitioners consider and make informed decisions about trade- offs relating to the selection of bikeway types. This report highlights linkages between the bikeway selection process and the transportation planning process. This guide presents these factors and considerations in a practical process- oriented way. It draws on research where available and emphasizes engineering judgment, design flexibility, documentation, and experimentation. 14. SUBJECT TERMS 15. NUMBER OF PAGES Bike, bicycle, bikeway, multimodal, networks, 52 active transportation, low stress networks 16. PRICE CODE NA 17. SECURITY 18. SECURITY 19. SECURITY 20. -
Rice County, Minnesota Highway
A B C D E F G H I J R 22 WR22 W21 R W21 R WR20 W R20 WR19 Road Name Location Road Name Location Eaton Ave................G4-5, G8, G9, G9-10G9,G8, EatonAve................G4-5, 13000 12000 11000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 E..............H7-J7 200th St EavesAve...............G3 200th St W.............A7 200th St EbelAve..................G5 201st Ct W.............B7 201stCt EbelWa y.................G3 202ndW............A7 St EbertCt....................G3 Rice County, 204th St E..............G7 204th St EchaCt..................G3 rt 205th St W.............C7 205th St D8-9 D6-7, EchoAve.................D4-5, 1 W.............C7 206th St EchoCt....................D8 1 Edg e brookDr...........G3 3000 E..............F8 208th St 209th St W.............C8 209th St Edward sWa y...........G5 3000 S co tt County Scott I8-J8 E..............I8, 210th St G9 EilerAve...................G6-8, 210th St W.............A8-D8 210th St ElginCt.....................D6 Minnesota ElginTrl....................D8 Porter 02 E..............H8-I8 215th St 04 C8B8, W.............A8, 215th St ElktonTrl..................D8 Creek 218th St W.............A8 218th St ElmCt.......................G6 06 05 04 03 02 06 01 Bridg e waterTowns hip County Wheatland County Porter03 Creek W e bsterTowns hip I8 E..............F8-H8, 220th St D9-10D8,D6, D5-6, D4-5, ElmoreAve...............D2-3, 4000 01 T112NR21W T111NR20W Ditch 14 Ditch 31 W.............B8-C8 220th St ElmorePath..............D6 4000 Delano 1. Ave De 1. cke Ct r 222ndW............D8-E8 St ElmoreTrl.................D6 05 ElmoreWa y..............D6 Highway Map Rice County, W 41stSt 2. -
What Are the Advantages of Roundabouts?
What is a roundabout? A roundabout is an intersection where traffic travels around a Circulatory central island in a counter- Truck Apron Roadway clockwise direction. Vehicles entering or exiting the roundabout must yield to vehicles, bicyclists, and pedestrians. Figure 1 presents the elements of a roundabout. Yield Line Splitter Island Figure 1: Elements of a Roundabout What are the advantages of roundabouts? • Less Traffic Conflict: Figure 2 compares the conflict points between a conventional intersection and a modern roundabout. The lower number of conflict points translates to less potential for accidents. • Greater safety(1): Primarily achieved by slower speeds and elimination of left turns. Design elements of the roundabouts cause drivers to reduce their speeds. • Efficient traffic flow: Up to 50% increase in traffic capacity • Reduced Pollution and fuel usage: Less stops, shorter queues and no left turn storage. • Money saved: No signal equipment to install or maintain, plus savings in electricity use. • Community benefits: Traffic calming and enhanced aesthetics by landscaping. (1) Statistics published by the U.S. Dept. of transportation, Federal Highway Administration shows roundabouts to have the following advantages over conventional intersections: • 90% reduction in fatalities • 76% reduction in injuries • 35% reduction in pedestrian accidents. Signalized Intersection Roundabout Figure 2: Conflict Point Comparison How to Use a Roundabout Driving a car • Slow down as you approach the intersection. • Yield to pedestrians and bicyclists crossing the roadway. • Watch for signs and pavement markings. • Enter the roundabout if gap in traffic is sufficient. • Drive in a counter-clockwise direction around the roundabout until you reach your exit. Do not stop or pass other vehicles. -
Viscosity Resin for Reinforcing Pothole Patching Materials
NIST Civil Infrastructure Showcase 3-14-14 Gaithersburg, MD Development of High-Toughness, Low- Viscosity Resin for Reinforcing Pothole Patching Materials BruinPatch, Inc. A UCLA Startup for Improving National Infrastructure Larry Carlson UCLA Institute for Technology Advancement President, Bruinpatch, Inc. [email protected] (818) 970-5532 Engineering Institute for Technology Advancement Product Product: A long lasting pothole repair method that utilizes a low viscosity resin, a patented catalyst and UCLA’s patented approach Integrated Dual Phase Approach Porous asphalt with Top Phase: infiltrated DCPD layer • Moisture resistant • High toughness Interface • Durable, rutting resistant Densely compacted Bottom Phase: asphalt layer • Compacted standard materials • Low Cost Cross-section DCPD Resin Curing Schematic illustration of aggregate-asphalt mix Ring-opening Metathesis Polymerization infiltrated with DCPD and formed a hardened continuous network within • Capable of infiltrating into the voids, and Reduction of continuous and interconnected voids • Reinforce the continuous phase of the aggregate composites Curing Profile cold mix 160 'C Interface of cold mix and D2 mix 120 D2 160 'C 1.5 min 100 4 min 80 60 Surface of cold mix Temperature 'C 40 Resin added 20 0 2 4 6 8 10 12 Time Minute Curing profiles were recorded by measuring temperature profile on the surface and at the interface of the porous mix and dense mix. Catalyst Development 180 160 180 C831 0 TPP 140 C831 160 -20'C to RT C727 0.03% TPP -11'C -3'C 140 120 0 TPP -5'C 120