Associations between the characteristics of intersections and the risk of red-light-running crashes

Many studies have focused on the effects of drivers and the characteristics of signals on crashes involving automobiles running red-lights (referred to as ‘RLR’ in this paper). However, very little work has been conducted to quantify the effect of the geometric design of intersections on the risk of RLR crashes. This study investigates signalized intersections in Alabama to examine how RLR crashes differ from other types of crashes at these intersections. The analysis results indicate that four-way intersections showed a higher susceptibility of RLR crashes than other intersection types. Some other comparisons that showed a higher susceptibility of RLR crashes were intersections on straight roadways compared to curved roads, level roads compared to downhill or uphill, crest or sag, and intersections having two-lane cross streets compared to those with wider cross streets. Also, installing a left-turn lane can reduce the proportion of RLR crashes compared to others at the signalized intersections.


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  • Accession Number: 01666459
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 23 2018 12:13PM