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Abstract for presentation (Poster or Podium)

Transportation Safety

Impact of Red Light Camera Installation and Removal on Intersection Safety in Lafayette, Louisiana

Sunday, June 16, 2024
1:15 PM - 2:30 PM ET
Room: Galleria
Abstract:



The red light running (RLR) at signalized intersections has been a serious safety concern in the United States. According to the Insurance Institute for Highway Safety, RLR resulted in 1,109 deaths and 127,000 injuries in 2021. Automated enforcement, or redlight running cameras (RLC) has been approved as an effective countermeasure to the red-light running problem, if set up properly. Lafayette, Louisiana (LA) installed RLCs in 2008 after conducting a thorough study. But after 8 years of operation, the cameras were quietly removed in 2017. Since then, there is some anecdotal evidence that the number of RLR violations is rising. This study was motivated to reveal the impact of the red-light cameras program by analyzing the crashes in three time periods, three years before the RLC installation, eight years of RLC operation, and three years after the RLC removal. The before-and-after crash analysis shows that by initiating the RLC program, the right-angle and total crashes reduced 57%, and 18%, respectively. The removal of these cameras lead to an increase of 30% and 25% of the total crashes and right-angle crashes, respectively. Since traffic volume affects the crash occurrences, the trend of annual crash rate was also presented on one intersection that has complete traffic data (annual AADT) throughout the 14 years. The crash rate analysis further reveals the safety difference between ‘with’ and ‘without’ RLC operations. This study clearly demonstrates the benefits of the camera enforcement program and validates its values to the safety of signalized intersections.






Learning Objectives:

Attendees can expect to learn the following from this session:
  • Upon completion, participants will be able to understand how the red light camera program contributes to enhancing the safety of signalized intersections.
  • Upon completion, participants will be able to express the safety benefits of the red light camera program in measurable, quantitative terms.
  • Upon completion, participants will be able to advocate for the promotion and support of the red light camera program among relevant stakeholders.