Rather than improving motorist safety, red-light cameras significantly increase crashes researchers at the University of South Florida College of Public Health conclude. (Credit: iStockphoto/Sue Smith)

“The rigorous studies clearly show red-light cameras don’t work,” said lead author Barbara Langland-Orban, professor and chair of health policy and management at the USF College of Public Health.

“Instead, they increase crashes and injuries as drivers attempt to abruptly stop at camera intersections. If used in Florida, cameras could potentially create even worse outcomes due to the state’s high percent of elderly who are more likely to be injured or killed when a crash occurs.”

Red-light cameras photograph violators who are then sent tickets in the mail. Hillsborough County Commissioners unanimously agreed earlier this month to install the cameras at several major intersections in the county. The devices could be adopted by more cities and counties if Florida legislators pave the way by changing a state law this spring.

The USF report highlights trends in red-light running in Florida, summarizes major studies, and analyzes the automobile insurance industry’s financial interest in cameras. Among the findings:

• Traffic fatalities caused by red-light running are not increasing in Florida and account for less than 4 percent of the state’s yearly traffic deaths. In contrast, more than 22 percent of the state’s traffic fatalities occur at intersections for reasons other than red-light running.
  
• The injury rate from red-light running crashes has dropped by a third in less than a decade, indicating red-light running crashes have been continually declining in Florida without the use of cameras.
  
• Comprehensive studies from North Carolina, Virginia, and Ontario have all reported cameras are significantly associated with increases in crashes, as well as crashes involving injuries. The study by the Virginia Transportation Research Council also found that cameras were linked to increased crash costs.
  
• Some studies that conclude cameras reduced crashes or injuries contained major “research design flaws,” such as incomplete data or inadequate analyses, and were conducted by researchers with links to the Insurance Institute for Highway Safety. The IIHS, funded by automobile insurance companies, is the leading advocate for red-light cameras. Insurers can profit from red-light cameras, since their revenues will increase when higher premiums are charged due to the crash and citation increase, the researchers say.