Title | Engineering Countermeasures to Reduce Red-Light-Running |
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Author | Texas Transportation Institute |
Language | English |
File Size | 791.7 KB |
Total Pages | 122 |
Federal Title Page Author's Title Page Disclaimer Notice Acknowledgments Table of Contents List of Figures List of Tables 1. Introduction Overview Objective Scope Approach 2. Red-Light-Running Process and Countermeasures Overview Red-Light-Running Process Review of Texas Law Exposure Factors Flow Rate on the Subject Approach Number of Signal Cycles Phase Termination by Max-Out Contributory Factors Probability of Stopping Driver Behavior Consequences of Not Stopping Consequences of Stopping Yellow Interval Duration Factors Leading to Conflict All-Red Interval Duration Entry Time of the Conflicting Driver Flow Rate on the Conflicting Approach Red-Light-Running Countermeasures Engineering Countermeasures Increase the Yellow Interval Duration Provide Green-Extension Improve Signal Coordination Improve Signal Operation Provide Pre-Yellow Signal Indication Improve Sight Distance Improve Visibility of Signal Increase Conspicuity of Signal Add Advance Warning Signs Remove Unneeded Signals Add Capacity with Additional Traffic Lanes Flatten Sharp Curves Enforcement Countermeasures 3. Model Development and Countermeasure Selection Overview Measures of Effectiveness Model Development Countermeasures to be Evaluated 4. Study Site Selection and Data Collection Overview Site Selection Site Selection Criteria Study Site Characteristics Data Collection Plan Field Data Collection Crash Data Collection 5. Data Analysis Overview Analysis of Field Data Database Summary Descriptive Statistics Measures of Effectiveness Model Calibration and Sensitivity Analysis Analysis of Factor Effects Statistical Analysis Method Model Calibration Sensitivity Analysis Examination of a Common Yellow Interval Equation Evaluation of Countermeasures Statistical Analysis Method Evaluation Model Extensions - Identifying Problem Locations Analysis of Crash Data Database Review and Analysis Model Calibration Sensitivity Analysis Analysis Methodology 6. Conclusions Overview Summary of Findings Red-Light-Running Process Exposure Factors Contributory Factors Analysis of Red-Light-Running Data Database Summary Red-Light-Running Rates Entry Time of the Red-Light-Running Driver Analysis of Factors Affecting the Frequency of Red-Light-Running Examination of a Common Yellow Interval Equation Evaluation of Countermeasures Synthesis of Countermeasure Effectiveness Relationship between Red-Light-Running and Crash Frequency Conclusions 7. References Appendix--Guidelines for Selecting and Evaluating Engineering Countermeasures to Reduce Red-Light-Running Introduction Objective Scope Identify Problem and Cause Gather Information Crash History Observational Study Site Survey Confirm Extent of Problem Compute Expected Frequency of Red-Light-Running Identify Red-Light-Running Index Assess Crash History Identify Possible Causes Select Countermeasures Select Candidate Countermeasures Evaluate Countermeasures Identify Target Modification Factor Compute Joint Modification Factor Compute Crash Reduction Factor Example Application Calibration Procedure