Article from: www.thenewspaper.com/news/00/71.asp
Extending the duration of the yellow signal at an intersection in Fairfax, Virginia resulted in a huge drop in the number of red light camera violations. Specifically, the yellow light at the intersection of US50 and Fair Ridge Drive increased by 1.50 seconds, which resulted in a 96 percent drop in citations.This experience should prove to any skeptic that sound engineering practices, not only work, but are preferable to exploiting motorists through the use of ticket cameras and related automated enforcement devices.Source: Red Light Citations Drop Below One Per Day (National Motorists Association, 7/12/2001)