This special issue summarizes information from around the world about the use of red light cameras and photo radar to enforce traffic laws. A review of red-light camera studies conducted in Australia, Singapore and the United States (in Oxnard, California), found reductions in injury crashes attributed to the use of cameras ranged from 7 percent to 46 percent. Another study looked at the use of photo radar to reduce speeding in Washington, D.C., and found that the proportion of motorists going fast enough to get a ticket declined on seven neighborhood streets where automated enforcement was used to ticket speeders. In the D.C. program, the police department mounted speed cameras on five different unmarked police cars, making it possible for officers to move the cameras among 60 enforcement zones throughout the city. This issue also briefly describes recent court decisions regarding the legality of automated enforcement programs in San Diego, California, and Denver, Colorado. (Author/publisher)
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