By Associated Press - Thursday, August 2, 2018

PHOENIX (AP) - The Arizona Department of Transportation says it’s going to try using some red lights along Interstate 17 on-ramps in Phoenix as part of its system to provide alerts about wrong-way vehicles on the freeway.

ADOT said Wednesday its pilot program to combat wrong-way driving means drivers used to seeing metered lights showing red for only a few seconds will hold on red for longer periods if there’s a wrong-way vehicle ahead on the freeway.

The system uses 90 thermal camera-based technology to detect wrong-way vehicles along 15 miles (24 kilometers) of I-17. The system then provides alerts to ADOT personnel, state troopers and the traveling public.

People were interested in these podcasts

ADOT systems technology group manager Susan Anderson says the lights on I-17’s entrance ramps are traffic signals that drivers should heed.

Copyright © 2026 The Washington Times, LLC.

Please read our comment policy before commenting.