Effectiveness of red light running camera enforcement program in reducing crashes: evaluation using "before the installation", "after the installation", and "after the termination" data.

The focus of this manuscript is to evaluate and assess the effectiveness of red light running camera (RLC) enforcement program in reducing crashes at signalized intersections. Data from January 1997 to December 2010 for thirty-two signalized intersections in the city of Charlotte, North Carolina, where RLCs were installed between August 1998 and August 2000 and terminated in fall 2006, were gathered, analyzed, and compared for "before the installation", "after the installation", and "after the termination" periods. Descriptive analysis and paired t-tests were performed using rear-end, sideswipe, left-turn, angle, and right-turn crashes as well as the number of total crashes. The expected number of total crashes, had RLC enforcement program not been implemented, was computed using the empirical bayes (EB) method and compared to the actual number of total crashes for "after the installation" and "after the termination" periods. Results obtained indicate that RLC enforcement program leads to an increase in sideswipe and rear-end crashes at ≥ 50% of the signalized intersections. It is effective in reducing total crashes at 50% and 16% of the thirty-two signalized intersections when analyzed considering "before the installation - after the installation" and "before the installation - after the termination" scenarios, respectively. Benefits due to reduction in the number of total crashes may be higher if RLC enforcement program is implemented at signalized intersections with (1) total entering vehicles per day less than 40,000, (2) fewer than 20 rear-end crashes per year, or (3) fewer than 5 sideswipe crashes per year.

[1]  Richard Tay,et al.  Minimizing Red Light Violations: How Many Cameras Do We Need for a Given Number of Locations? , 2009 .

[2]  Warren A. Harrison,et al.  EVALUATION OF THE RED LIGHT CAMERA PROGRAM AND THE OWNER ONUS LEGISLATION , 1988 .

[3]  Richard Tay,et al.  Should traffic enforcement be unpredictable? The case of red light cameras in Edmonton. , 2011, Accident; analysis and prevention.

[4]  T Maekinen,et al.  AUTOMATIC ENFORCEMENT OF SPEED AND RED LIGHT VIOLATIONS. APPLICATIONS, EXPERIENCES AND DEVELOPMENTS , 1992 .

[5]  Bryan E. Porter,et al.  Predicting Red-Light Running Behavior: A Traffic Safety Study in Three Urban Settings , 2000 .

[6]  Bryan E Porter,et al.  Turning off the cameras: Red light running characteristics and rates after photo enforcement legislation expired. , 2013, Accident; analysis and prevention.

[7]  Scott Tippetts,et al.  Fatal red light crashes: the role of race and ethnicity. , 2005, Accident; analysis and prevention.

[8]  Susan A Ferguson,et al.  Effects of Red Light Cameras on Violations and Crashes: A Review of the International Literature , 2003, Traffic injury prevention.

[9]  A G Hobeika,et al.  ASSESSMENT OF RED LIGHT RUNNING CAMERAS IN FAIRFAX COUNTY, VIRGINIA , 2003 .

[10]  A. Williams,et al.  Prevalence and characteristics of red light running crashes in the United States. , 1999, Accident; analysis and prevention.

[11]  A F Williams,et al.  Evaluation of red light camera enforcement in Oxnard, California. , 1999, Accident; analysis and prevention.

[12]  F Schnerring,et al.  AN EVALUATION OF RED LIGHT CAMERAS IN SYDNEY , 1993 .

[13]  Kangwon Shin,et al.  The impact of red light cameras on safety in Arizona. , 2007, Accident; analysis and prevention.

[14]  Ezra Hauer,et al.  Observational Before-After Studies in Road Safety , 1997 .

[15]  T. Cook,et al.  Quasi-experimentation: Design & analysis issues for field settings , 1979 .

[16]  Ezra Hauer,et al.  Estimating Safety by the Empirical Bayes Method: A Tutorial , 2002 .

[17]  C. Farmer,et al.  Reducing red light running through longer yellow signal timing and red light camera enforcement: results of a field investigation. , 2008, Accident; analysis and prevention.

[18]  Anne T McCartt,et al.  Effects of red light camera enforcement on fatal crashes in large U.S. cities. , 2011, Journal of safety research.

[19]  Antoine G. Hobeika,et al.  Evaluation Update of the Red Light Camera Program in Fairfax County, VA , 2006, IEEE Transactions on Intelligent Transportation Systems.

[20]  Troy D. Walden,et al.  EVALUATION OF AUTOMATED TRAFFIC ENFORCEMENT SYSTEMS IN TEXAS , 2011 .