Traffic Engineering Manual Revised 04/2015 Traffic Engineering Manual Table of Contents I. Administrative Policies AUTHORIZATION FOR 2009 MUTCD .............................................................. 6 AUTHORIZATION FOR TRAFFIC CONTROL DEVICES ............................... 7 PHOTO ENFORCEMENT PERMIT POLICY ..................................................... 8 II. Requirements Section 1A.1 STUDY OF TRAFFIC ENGINEERING LOCATIONS ..................................... 21 Section 1B.1 TRAFFIC ENGINEERING WAIVERS .............................................................. 22 Section 2A.1 SIGNS ................................................................................................................... 23 Section 2A.2 U CHANNEL SIGN POST SPLICE .................................................................... 24 Section 2B.2 USE OF TRUCK ROUTE SIGNS ....................................................................... 25 Section 2B.3 USE OF NO TRUCK SIGNS ............................................................................... 26 Section 2B.4 USE OF WEIGHT LIMIT SIGNS ....................................................................... 28 Section 2B.5 USE OF NO HAZARDOUS CARGO SIGNS .................................................... 29 Section 2B.6 UNMUFFLED COMPRESSION BRAKE PROHIBITED SIGNS .................... 30 Section 2B.7 LOUD MUSIC PROHIBITED SIGNS ................................................................ 33 Section 2B.8 INSTALLATION AND MAINTENANCE OF STOP SIGNS ........................... 35 Section 2B.9 KEEP RIGHT EXCEPT TO PASS/SLOWER TRAFFIC KEEP RIGHT .......... 36 Traffic Engineering Manual Section 2B.10 MOVE ACCIDENTS FROM TRAVEL LANES SIGNS ................................... 37 Section 2B.11 MOVE OVER ....................................................................................................... 39 Section 2C.3 TRAFFIC SIGNAL UNDER STUDY FOR REMOVAL SIGN ......................... 41 Section 2C.4 USE OF SIGNAL AHEAD SIGNS ..................................................................... 42 Section 2C.5 USE OF LOW CLEARANCE SIGNS ................................................................. 43 Section 2C.6 WARNING SIGNS FOR PLAY ACTIVITIES ................................................... 44 Section 2C.7 WARNING SIGNS FOR ANIMALS .................................................................. 45 Section 2C.8 CHURCH WARNING SIGN POLICY ............................................................... 46 Section 2C.9 BRIDGE ICES BEFORE ROAD SIGN POLICY ............................................... 47 Section 2D.2 JURISDICTIONAL BOUNDARY SIGNS ON INTERSTATE AND NON- INTERSTATE HIGHWAYS ............................................................................... 48 Section 2D.3 GATEWAYS INTERSTATE AND NON-INTERSTATE HIGHWAYS .......... 52 Section 2D.4 USE OF HOSPITAL SPECIFIC SERVICE SIGNS ON INTERSTATES/NON- INTERSTATES FOR EMERGENCY SERVICES ............................................. 56 Section 2D.5 USE OF PHARMACY SIGNS ON INTERSTATE HIGHWAYS ..................... 59 Section 2D.6 USE OF SUPPLEMENTAL GUIDE SIGNS ON NON-INTERSTATE HIGHWAYS ........................................................................................................ 61 Traffic Engineering Manual Section 2D.7 DESTINATION SIGNING FOR NON-CONTROL OF ACCESS ROUTES .... 66 Section 2D.8 INSTALLATION AND MAINTENANCE OF LOCAL STREET NAME SIGNS ................................................................................................................... 68 Section 2D.9 LANDSCAPE SPONSORSHIP SIGNS FOR ROUNDABOUTS ...................... 70 Section 2E.2 TOURIST INFORMATION AND WELCOME CENTER SIGNING ............... 72 Section 2F.1 SCENIC RIVER SYSTEM SIGNING ................................................................. 74 Section 2G.1 WATERWAY SIGNING ..................................................................................... 75 Section 2H.1 ACKNOWLEDGEMENT SIGNS OR PLAQUES ............................................. 76 Section 2M.1 MEMORIAL AND DEDICATION SIGNS ........................................................ 77 Section 3B.2 MARKED CROSSWALK GENERAL INFORMATION .................................. 81 Section 3B.3 NO PASSING ZONES ......................................................................................... 87 Section 3C.2 USE OF OBJECT MARKERS ............................................................................ 89 Section 4B.3 REMOVAL OF TRAFFIC SIGNALS ................................................................. 91 Section 4B.4 USE OF NON STANDARD TRAFFIC SIGNAL POLES ................................. 95 Section 4L.1 REMOVAL OF INTERSECTION CONTROL BEACONS ............................... 96 Section 6A.1 QUEUE ANALYSIS FOR LANE CLOSURES ON INTERSTATE .................. 97 Traffic Engineering Manual Section 7A.2 POLICY FOR SCHOOL AREAS ........................................................................ 99 Section 8A.1 DO NOT STOP ON TRACKS ...........................................................................105 Section 8B.1 RAILROAD STORAGE SPACE SIGNS ..........................................................106 Section 9B.2 BICYCLE SHARE THE ROAD ASSEMBLY .................................................107 III. Studies Section 20.1 AJR NETWORK STUDY ..................................................................................111 Section 20.2 SPEED STUDY ..................................................................................................118 Section 20.3 CURVE SPEED STUDY ...................................................................................124 APPENDIX A LIST OF FIGURES AND TABLES ..................................................................128 APPENDIX B MUTCD REFERENCES ....................................................................................131 APPENDIX C LEGAL REFERENCES .....................................................................................162 Traffic Engineering Manual Policies I. Administrative Policies AUTHORIZATION FOR 2009 MUTCD 6 Traffic Engineering Manual Policies AUTHORIZATION FOR TRAFFIC CONTROL DEVICES 7 Traffic Engineering Manual Policies PHOTO ENFORCEMENT PERMIT POLICY 8 Traffic Engineering Manual Policies 9 Traffic Engineering Manual Policies 10 Traffic Engineering Manual Policies 11 Traffic Engineering Manual Policies 12 Traffic Engineering Manual Policies 13 Traffic Engineering Manual Policies 14 Traffic Engineering Manual Policies 15 Traffic Engineering Manual Policies 16 Traffic Engineering Manual Policies 17 Traffic Engineering Manual Policies 18 Traffic Engineering Manual Policies 19 Traffic Engineering Manual Policies II. Requirements The following sections are Traffic Engineering policies that are set by the Department for use when involving signs and pavement markings. Revisions to these policies will be signed by the Chief Engineer and become effective upon receipt. Non-compliance of these policies requires approval from the correct chain of command. 20 Traffic Engineering Manual Policies Section 1A.1 STUDY OF TRAFFIC ENGINEERING LOCATIONS 1A.1.1 PURPOSE If a location has been studied within 2 years of the current date, a new study shall be conducted only if there has been a major traffic generator or traffic volumes added to the area. 1A.1.2 DOCUMENTATION FOR APPROVAL All correspondence to local governments on traffic control changes should include the following verbiage: In accordance with Senate Concurrent Resolution No. 27 of the 2007 Regular Session, the Department will consider requests from the local governing authority if they have concerns regarding any changes to traffic control with their corporate limits based on the following three requirements: 1. A traffic engineering study is conducted by the municipal/parish traffic engineer and a report is prepared which supports the positions of the governing authority. 2. The governing authority of the municipality enacts a local ordinance, which adopts the findings by the local traffic engineering report. 3. The District Traffic Engineer for the Department concurs with the findings of the traffic engineering report. Reports should be sent in on Intradepartmental letterhead with signature blocks for approval. 21 Traffic Engineering Manual Policies Section 1B.1 TRAFFIC ENGINEERING WAIVERS 1B.1.1 DEFINITION A waiver is required when an EDSM or another policy requirements are not met. 1B.1.2 PURPOSE The purpose of this section is to define procedures to get a waiver approved. An intradepartmental memo should state what is being waived, why a waiver is needed and what mitigation will be done. All necessary reports or documentation should be attached to the intradepartmental memo. The intradepartmental memo shall be addressed to the Chief Engineer or the Traffic Engineering Division Administrator depending on who has been designated to approve the specific waiver. There should be a routing slip attached to the memo with the following order of approvals: 1. District Administrator 2. Traffic Engineering Management Administrator 3. Traffic Engineering Division Administrator 4. Chief Engineer 22 Traffic Engineering Manual Signs Section 2A.1 SIGNS 2A.1.1 MUTCD SECTION REFERENCE Chapter 2 Signs 2A.1.2 POLICY Word messages shall not be used if a symbol designs is available in the current DOTD adopted MUTCD. 2A.1.3 EXAMPLES Figure 2A.1.1 Symbol Sign Example 1 Figure 2A.1.2 Symbol Sign Example 2 23 Traffic Engineering Manual Signs Section 2A.2 U CHANNEL SIGN POST SPLICE 2A.2.1 MUTCD SECTION