title: Reductions in injury crashes associated with red light camera enforcement in oxnard, california.
abstract: OBJECTIVE
  This study estimated the impact of red light camera enforcement on motor vehicle crashes in one of the first US communities to employ such cameras-Oxnard, California.
  
  
  METHODS
  Crash data were analyzed for Oxnard and for 3 comparison cities. Changes in crash frequencies were compared for Oxnard and control cities and for signalized and nonsignalized intersections by means of a generalized linear regression model.
  
  
  RESULTS
  Overall, crashes at signalized intersections throughout Oxnard were reduced by 7% and injury crashes were reduced by 29%. Right-angle crashes, those most associated with red light violations, were reduced by 32%; right-angle crashes involving injuries were reduced by 68%.
  
  
  CONCLUSIONS
  Because red light cameras can be a permanent component of the transportation infrastructure, crash reductions attributed to camera enforcement should be sustainable.
authors.affiliation: Insurance Institute for Highway Safety, Arlington, Va 22201, USA. rretting@iihs.org
authors.forename: Richard A
authors.initials: RA
authors.lastname: Retting
authors.forename: Sergey Y
authors.initials: SY
authors.lastname: Kyrychenko
mesh_terms: D000063:Accidents, Traffic / Q000145:classification / Q000517:prevention & control* / Q000706:statistics & numerical data*; D001334:Automobile Driving / Q000331:legislation & jurisprudence*; D002140:California / Q000453:epidemiology; D035061:Control Groups; D006801:Humans; D035846:Law Enforcement; D016365:Liability, Legal; D010781:Photography; D015397:Program Evaluation; D012044:Regression Analysis; D040242:Risk Reduction Behavior; D011049:Social Control Policies; D014947:Wounds and Injuries / Q000453:epidemiology / Q000517:prevention & control