Download Engineering Countermeasures to Reduce Red-Light-Running PDF

TitleEngineering Countermeasures to Reduce Red-Light-Running
File Size791.7 KB
Total Pages122
Table of Contents
                            Federal Title Page
Author's Title Page
Table of Contents
List of Figures
List of Tables
1. Introduction
2. Red-Light-Running Process and Countermeasures
		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
	Measures of Effectiveness
	Model Development
	Countermeasures to be Evaluated
4. Study Site Selection and Data Collection
	Site Selection
		Site Selection Criteria
		Study Site Characteristics
	Data Collection Plan
		Field Data Collection
		Crash Data Collection
5. Data Analysis
	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
		Model Extensions - Identifying Problem Locations
	Analysis of Crash Data
		Database Review and Analysis
		Model Calibration
		Sensitivity Analysis
			Analysis Methodology
6. Conclusions
	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
7. References
Appendix--Guidelines for Selecting and Evaluating Engineering Countermeasures to Reduce Red-Light-Running
	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

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