Other Civil and Environmental Engineering Commons^™

Analyzing The Effects Of Led Traffic Signals On Urban Intersection Safety, Deogratias Eustace, Valerie E. Griffin, Peter W. Hovey

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

In 2002, there were 1,299,000 crashes at signalized intersections in the United States. These crashes account for approximately 21 percent of total crashes and about 24 percent of all fatal and injury collisions. The social and financial impact of this number of collisions is substantial. The Federal Highway Administration (FHWA) and other agencies have recognized the detrimental effects of intersection crashes on our society and continue to fund research that will lead to a decrease in crash frequency. Numerous countermeasures have been tested for their potential to reduce crashes. Infrastructure improvements such as the construction of left-turn lanes, the removal …