Red light violations are one of the major causes of crashes, deaths and injuries at signalized intersections. The National Highway Traffic Safety Administration estimates that 20 percent of drivers do not obey intersection signals. The NHTSA reports that crashes caused by red light violators result in more than 800 fatalities and 165,000 injuries annually. The monetary impact is estimated to reach $14 billion annually. Other motorists and pedestrians account for nearly half the deaths caused by red light violators.