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21st Century Operations Using 21st Century Technologies

SIGNAL TIMING UNDER SATURATED CONDITIONS

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Table of Contents

Notice

Documentation Page

Acknowledgments

Guidance

About This Document

Objectives

Traditional Objectives

Maximizing Throughput

Queue Management

Strategies

Guidance from Experts

Cycle Length and Green Time

Buses

1. Literature Review

Overview

Annotated Bibliography

Foundational Research

Optimization Model Research

Network Metering

Genetic Algorithms

MCH1542 B Installation Guide for MOVA

Red Clearances

References

Overview of NCHRP 3-66

References for NCHRP 3-66 Discussion

2. The State of the Practice

Categorizing Congestion Based on Operational Objectives

Example Applications

Example 1. Square Lake Road at Telegraph Road, Oakland County, Michigan

Example 2. Sunrise Boulevard, Rancho Cordova, California

Example 3. North Carolina State Highway 54 and I-40, Durham, NC

Example 4. Bandera Road and Guilbeau Road, San Antonio, Texas

State-of-the-Practice Interviews

Definition of Saturation

Motivating Conditions

Strategies Taken, and Their Objectives

Demons

Tactics and Controller Features

Desired Controller Features

3. Evaluation of Strategies

Long Green Times and Cycles

Introduction

Study Site

Field Data

Analysis of Field Data

Field Data Conclusions and Further Discussion

Simulation

Discussion and Conclusion

Cycle Length and Bus Capacity

Introduction

Modeled Operation

Simulation

Simulation Results

Conclusion

U.S. Department of Transportation - Federal Highway Administration

1200 New Jersey Avenue, SE
Washingtion, DC 20590

November 2008

Publication Number: FHWA-HOP-09-008

Task Order Under Contract Number: DTFH61-06-D-00006

Office of Operations