The Impact of Red Light Cameras on Crashes Within Miami-Dade County, Florida

Traffic Injury Prevention
Anthoni F LlauVukosava Pekovic

Abstract

To determine the safety effect of red light camera (RLC) programs, this study attempted to estimate its impact on collisions within Miami-Dade County, Florida Methods: A before-after evaluation using a comparison group along with traffic control correction was employed. Twenty signalized intersections with RLCs that began enforcement on January 1, 2011, were matched to 2 comparison sites located at least 2 miles from camera sites to minimize spillover effect. An empirical Bayes analysis was used to account for potential regression to the mean effects. An index of effectiveness along with 95% confidence intervals were calculated based on the comparison between the estimated and actual number of crashes in the after period. During the first year, RLC sites experienced a marginal decrease in right angle/turn collisions (-3%), a significant increase in rear-end collisions (+40%), and significant decreases in all injury (-19%) and RLR-related injury collisions (-24%). An increase in right angle/turning (+14%) and rear-end (+51%) collisions at the RLC sites was observed after 2 years despite camera enforcement. A significant reduction in RLR-related injury crashes (-17%), however, was still observed after 2 years. A nonsignificant de...Continue Reading

References

Apr 10, 1999·Accident; Analysis and Prevention·R A RettingA F Feldman
Apr 10, 2002·Accident; Analysis and Prevention·Matthew G Karlaftis, Ioannis Golias
Oct 31, 2002·American Journal of Public Health·Richard A Retting, Sergey Y Kyrychenko
Oct 3, 2003·Traffic Injury Prevention·Richard A RettingA Shalom Hakkert
Mar 24, 2005·Accident; Analysis and Prevention·Mohamed Abdel-Aty, Joanne Keller
Jun 11, 2005·Accident; Analysis and Prevention·Xuedong YanMohamed Abdel-Aty
Oct 9, 2007·Accident; Analysis and Prevention·Kangwon Shin, Simon Washington

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Citations

Apr 25, 2019·Accident; Analysis and Prevention·Charles GoldenbeldGovert Schermers

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