Transcription of Traffic Signal Warrants
1 TTrraaffffiicc SSiiggnnaall WWaarrrraannttss Guidelines for Conducting a Traffic Signal warrant Analysis, 2nd Edition Revised Edition based on 2006 Texas MUTCD March 2008 Product 0-4701-P2 Traffic Signal Warrants Guidelines for Conducting a Traffic Signal warrant Analysis 2nd Edition Product Number 0-4701-P2 Project Number 0-4701 Sponsored by the Texas Department of Transportation Research Conducted by the Texas Transportation Institute The Texas A&M University System Author H.
2 Gene Hawkins, Jr. TxDOT Project Committee Project Director Michael A. Chacon Project Coordinator Margaret A. Moore March 2008 Guidelines for Conducting a Traffic Signal warrant Analysis, 2nd Edition Page v DISCLAIMER The contents of this document reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official view or policies of the Federal Highway Administration (FHWA) or the Texas Department of Transportation (TxDOT).
3 The United States Government and the State of Texas do not endorse products or manufacturers. Trade or manufacturers names may appear herein solely because they are considered essential to the object of this report. This document does not constitute a standard, specification, or regulation. The engineer in charge was H. Gene Hawkins, Jr., #61509. Guidelines for Conducting a Traffic Signal warrant Analysis, 2nd Edition Page vii TABLE OF CONTENTS Page CHAPTER 1: INTRODUCTION ..1 Traffic 1 Traffic Signals and the 2 Official FHWA MUTCD Rulings and Interpretations.
4 2 Advantages and Disadvantages of Traffic Signals .. 2 Alternatives to Traffic Signal Control .. 4 Traffic Signal 5 Traffic Signal 6 Post- warrant Analysis .. 7 Removal of Traffic Signals ..8 warrant Analysis Data .. 8 Order of warrant Presentation .. 9 Future Changes to Traffic Signal Warrants .. 9 CHAPTER 2: DATA COLLECTION PROCEDURES ..11 First Phase Vehicular Volume 11 Intersection Limits .. 13 Speed on the Major Roadway .. 13 Population of Area Where Intersection Is 14 Typical Weekday Hourly Vehicular Approach Volumes.
5 14 Number of Lanes per 16 Second Phase Crash warrant .. 17 Crash History .. 17 Types of 17 Third Phase Signal Operation Warrants .. 17 Distance between Existing Signals .. 18 Roadway 18 Hourly Volumes for a Typical Non-Business Day .. 19 Five-Year Projected Hourly Volumes .. 19 Fourth Phase Delay warrant .. 19 Peak Hour Vehicular Delay on Minor 19 Fifth Phase Pedestrian Related Warrants .. 19 Distance to Nearest Existing 20 Distance to Nearest Crosswalk .. 20 Pedestrian Walking Speed.
6 20 Hourly Pedestrian 21 Storage Capacity of 21 Size of Adequate Number of Gaps of Adequate Size .. 22 School Crossing Plan .. 22 Presence of School Children .. 22 CHAPTER 3: warrant ANALYSIS GUIDELINES ..23 First Phase Vehicular Volume 23 Data 24 Page viii Guidelines for Conducting a Traffic Signal warrant Analysis, 2nd Edition warrant Criteria .. 24 Frequently Asked Questions about the Volume 29 Second Phase Crash Experience warrant .. 30 Data 30 warrant Criteria .. 30 Frequently Asked Questions about the Crash Experience 31 Third Phase Signal Operation Warrants .
7 32 Data 32 Criteria for Coordinated Signal Systems warrant .. 33 Criteria for Roadway Network warrant .. 33 Installation Requirements .. 34 Fourth Phase Delay warrant .. 34 Data 34 Criteria for Peak Hour 34 Installation Requirements .. 34 Fifth Phase Pedestrian Warrants .. 34 Data 35 Pedestrian warrant 35 Pedestrian warrant Signal Installation Requirements .. 36 School Crossing warrant Criteria .. 37 School Crossing warrant Signal Installation 37 Pedestrian Related Criteria for the Crash Experience warrant .
8 37 Pedestrian Portion of Crash Experience warrant Signal Installation Requirements .. 38 APPENDIX A MUTCD BACKGROUND ..39 National and State Versions of the MUTCD .. 39 MUTCD as a Legal Document .. 39 Definition of Shall, Should, and May .. 40 MUTCD Guidelines and Warrants .. 40 APPENDIX B Warrants FROM THE TEXAS MUTCD ..43 Section warrant 1, Eight-Hour Vehicular Volume .. 43 Section warrant 2, Four-Hour Vehicular Volume .. 45 Section warrant 3, Peak 46 Section warrant 4, Pedestrian Volume.
9 48 Section warrant 5, School Crossing .. 49 Section warrant 6, Coordinated Signal System .. 50 Section warrant 7, Crash Experience .. 50 Section warrant 8, Roadway 51 APPENDIX C EXAMPLES OF warrant ANALYSIS ..53 Analysis Example for Warrants 1A and 53 Analysis Example for warrant 53 Blank warrant 53 APPENDIX D EXAMPLE OF ADEQUATE GAP FOR SCHOOL CROSSING warrant ..57 Guidelines for Conducting a Traffic Signal warrant Analysis, 2nd Edition Page ix LIST OF FIGURES Page Figure 1. warrant 2, Four-Hour Vehicular Volume (70 Percent Factor).
10 26 Figure 2. warrant 3, Peak Hour (70 Percent Factor) .. 26 Figure 3. warrant 2, Four-Hour Vehicular Volume .. 28 Figure 4. warrant 3, Peak Hour .. 28 Figure 5. Example of warrant 2, Four-Hour Vehicular 55 LIST OF TABLES Page Table 1. Texas MUTCD Traffic Signal Warrants .. 5 Table 2. Changes in Warrants from 1980 to 2006 Texas MUTCD .. 6 Table 3. Change in Previous MUTCD Edition Regarding Post- warrant Analysis .. 7 Table 4. Relative Use of Texas MUTCD Signal 10 Table 5. Order of warrant Analysis Process.
