Red-Light Cameras: For Revenue or Safety?

Conflicting opinions have arisen over the use of red-light cameras. But, new evidence may finally put an end to arguments over whether they actually improve safety, or are only effective in increasing revenues.

1 minute read

October 4, 2012, 7:00 AM PDT

By Andrew Gorden


Last year, both Los Angeles and Houston shut off their red-light cameras. Still, hundreds of other U.S. cities use them, citing their supposed ability to curb traffic collisions. Until now, the data supporting the cameras' ability to alter driver behavior to improve safety was murky. However, The Atlantic Cities's Eric Jaffe reports on some new evidence.

Researchers studied eight intersections in Virginia. Although they observed a decrease in the number of vehicles entering the intersections on red when cameras were present, and turned on, "What intrigued (and unsettled) the researchers was how quickly drivers reverted to red-light running form," notes Jaffe. "In the immediately aftermath of the law's expiration, the risk of someone running a red light at an intersection was three times higher than it had been when cameras were on."

Wednesday, October 3, 2012 in The Atlantic Cities

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 11, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

Yellow single-seat Japanese electric vehicle drivign down road.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs

The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

June 6, 2025 - PC Magazine

White Waymo autonomous car driving fast down city street with blurred background at night.

Seattle's Plan for Adopting Driverless Cars

Equity, safety, accessibility and affordability are front of mind as the city prepares for robotaxis and other autonomous vehicles.

June 16 - Smart Cities Dive

Two small wooden one-story homes in Florida with floodwaters at their doors.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?

With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

June 16 - Governing

People riding bicycles on separated bike trail.

With Protected Lanes, 460% More People Commute by Bike

For those needing more ammo, more data proving what we already knew is here.

June 16 - UNM News