Urban mobility problems demand clarity. Intersections remain the most common sites for crashes, congestion, and violations.

DOTHAN, Ala. (WTVY) - Traffic woes are coming to a standstill in Dothan. City crews have been working to reprogram traffic light sensors at intersections across the Circle City to help ease delays.

Efficient traffic management in urban areas remains a significant challenge as vehicle density grows and infrastructure ...

PORTLAND Ore. (KPTV) - New traffic signal technology is coming to one of Portland’s most dangerous streets. The Portland Bureau of Transportation (PBOT) says the new sensors will be tested on ...

Have you ever wondered how traffic lights know when to give you a signal? Reader Nick Shepard asked Bee Curious, a community-driven series in which The Sacramento Bee’s service journalism team answers ...