Project Title: Signalization Countermeasures to Reduce Red-Light Running

Sponsor: Texas Department of Transportation

Principle Investigator: Jim Bonneson

Research Staff:

TTI Project Number: 440272

Start Date: 9/1/00

End Date: 8/31/02

Abstract: Red-light running has become an all-too-frequent violation that has significant safety consequences. Red-light violations can be reduced through a variety of countermeasures. Engineering countermeasures include signal change interval modifications, green-phase extension, and advance warning signs. Enforcement countermeasures include police officer presence and automated monitoring systems. Unfortunately, limited resources often preclude the ongoing use of officer enforcement while automated systems are expensive and not overwhelmingly supported by the public. In contrast, engineering measures have great promise in terms of their cost-effectiveness; particularly, when used on an area-wide basis. The objective of this project is to describe how cost-effective traffic engineering techniques can be used to minimize the frequency of red-light-running and associated crashes. A two-year program of research is proposed to satisfy this objective. During the first year, the factors t hat affect red-light-running frequency and the effect of red-light-running on safety will be quantified. In the second year, the most promising engineering countermeasures will be implemented and evaluated. The main product of this research will be a Guideline Document. This document will provide technical guidance for engineers interested in using engineering countermeasures to reduce red-light-running. This document will also provide quantitative information on the effectiveness of each countermeasure.