Improving Traffic Signal Operations: A Primer

Overview

Traffic congestion is a major problem in cities of all sizes. This report describes how some relatively simple, low-cost adjustments to a traffic signal system can reduce traffic congestion and lead to big payoffs in time savings, environmental benefits, and safety. The report is organized in the following seven chapters: (1) Traffic Signals: Tools for Improving Safety and Traffic Flow; (2) Simple Strategies with Big Payoffs; (3) How Traffic Signals Work; (4) When Is a Signal Needed?; (5) Traffic Signal Maintenance; (6) Legal Aspects; and (7) Funding Traffic Signal Improvements.