Photo Enforcement Helping Bring Red Light Runners to a Stop

Kelly Messerschmidt

Technical Communications Manager

Messerschmidt Safety Consultants

Because police can’t be everywhere at once, red light cameras are being used more and more to enforce motorists’ coming to a stop at red lights. In fact, studies by the Insurance Institute for Highway Safety (IIHS) and others have found a 40-96% reduction in the number of people running red lights at intersections using this type of photo enforcement. Watch a YouTube video about red light cameras.

The IIHS reports that, in 2009, crashes caused by red light runners resulted in 676 deaths and an estimated 130,000 injuries. Obviously, enforcing drivers’ stopping at red lights has great ramifications for public safety.

You might be surprised at just how common red light runners are. In a AAA Foundation for Traffic Safety telephone survey conducted in 2010, one-third of the drivers reported having run a red light in the past 30 days—even though 93% of them said they thought doing so was unacceptable if stopping safely was an option. Other studies cited by the IIHS report that about three drivers per hour run red lights at intersections lacking the red light cameras. See how your state’s automatic enforcement laws measure up.

Contrary to what some think, red light cameras do not actually take a photo of every car driving through a particular intersection. Instead, the camera automatically photographs any car whose driver runs the red light. Red light cameras have been used for decades and have proven to be extremely accurate and reliable.

What constitutes one’s running a red light? It’s pretty simple. Running a red light is defined as the driver entering the intersection after the light has turned red. However, those who inadvertently find themselves in an intersection when the light changes to red are not considered red light runners. Who are the most likely to run a red light? An IIHS study conducted in 2009 found that red light runners were more likely to be younger (under 30), male, and have poor driving records with incidents of prior crashes, alcohol-related driving convictions, and speeding and other moving violations.

Read Q&As from IIHS about red light cameras.