In the United States, approximately 60 to 80 percent of survey respondents approve of automated enforcement systems at traffic signals. (13 August 2001)
Automated enforcement at intersections in the United States reduced traffic signal violations by 20 to 87 percent.(13 August 2001)
Studies in six metropolitan areas of the United States and Australia, automated enforcement systems reduced red light violations by 20 to 60 percent, decreased right-angle crashes by 30 percent, and reduced crash injuries by 10 percent.(August 1997)
Australia