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

Q: Stephen Wysong of Hemet said he has noticed over the years that most people seem unaware of the magnetic loop sensors embedded in the roadway at signaled intersections. He has seen overly cautious ...

Smart intersections are the next big thing in terms of ways to optimize the traffic, especially given the connected car push that’s getting so much traction these days. And naturally, the closer we ...

Phil Goldstein is a former web editor of the CDW family of tech magazines and a veteran technology journalist. He lives in Washington, D.C., with his wife and their animals: a dog named Brenna and two ...

Q: I read yet another answer of yours about damaged sensors. Some intersections use wire loops buried in the roadway and some use cameras mounted with the traffic lights. Out of curiosity, how do they ...

TUCSON, Ariz (KGUN) — Many readers didn't know that blue light traffic enforcement detection existed at several intersections, including the newest installation, at Ina and Thornydale in Marana. The ...

Those traffic sensors aren't always sensitive enough to recognize the presence of a motorcycle, with less metal and heft than vehicles with four wheels. Read typically tries to wait until another ...

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 ...