Most cities surveyed showed similar percentages in favor of red light cameras and even cities without the devices showed the same level of support. Despite such support, officials in many jurisdictions aren t able to implement camera programs. Only nine states and the District of Columbia have laws either granting their use or allowing them in specific communities. Without explicit authorization, camera use may not be possible. What is possible is a change in yellow light intervals, however.
New research indicates that retiming yellow signal lights can result in fewer crashes.
By retiming the yellow lights and allowing a very short all-red phase following, the amount of inadvertent red light running can be lowered. The Institute of Transportation Engineers has adopted a proposal for establishing the duration of traffic signal change intervals, citing a potential of 8 percent fewer crashes expected. In a related subject, studies are now underway to determine if allowing a right turn on red lights should be limited to certain times of day. Researchers have found that the practice, intended to reduce delays and fuel consumption, also increases the risk of crashes and injuries, especially to pedestrians. Strategies to reduce the risk seem to be focusing on prohibiting right turns on red from 7 a.m. to 7 p.m. rather than prohibiting them entirely.