Analysis shows red light programs in Texas don’t prevent accidents

Economists Justin Gallagher at Case Western Reserve University Weatherhead School of Management, and Paul J. Fisher, University of Arizona, “found no evidence that red light cameras improve public safety.”

The stated purpose of the red light camera programs is to reduce the number of accidents by specifically targeting drivers who run red lights.

According to the Insurance Institute for Highway Safety Highway Loss Data Institute, 388 communities have red light camera programs as of February 2019; 137 communities have speed camera programs as of February 2019.

This includes statewide work zone programs in Illinois, Maryland and Oregon. These numbers are down from 2010-2017 when more than 438 U.S. municipalities, including 36 of the 50 most populous cities, implemented electronic monitoring programs, the institute reports.

Gallagher and Fisher examined all police-recorded traffic accidents for three large Texas cities over a 12-year period, which included hundreds of thousands of accidents. They concluded that red light cameras “don’t reduce the total number of vehicle accidents, the total number of individuals injured in accidents or the total number of incapacitating injuries that involve ambulance transport to a hospital.”

One city they evaluated was Houston, which operated an extensive camera program at 66 intersections between 2006 and 2010. The program was ended by a voter referendum in 2010.

Gallagher and Fisher accessed detailed accident information on every traffic accident over a specific time period before and after the cameras were installed. They found that when the cameras were removed, angle accidents increased by 26 percent, but all other types of accidents decreased by 18 percent.

“Our study showed no evidence that cameras reduce the total number of accidents,” the authors write. “There’s no evidence that the camera program reduced the number of traffic-related injuries or the likelihood of incurring an incapacitating injury.”

While traffic accidents at urban intersections remain a serious public health issue, the authors write, their analysis found that Houston’s camera program was ineffective in improving traffic safety.

“Electronic monitoring is not the solution,” they conclude.



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