Traffic lights might seem like they let cars stop or go randomly, but that's not always the case. Many of them use special sensors that detect vehicles.

You notice changes to traffic lights can affect everyone on the road — especially when […] ...

Traffic engineers are quietly working on a radical idea: adding a white signal to the familiar red, yellow, and green. Instead of signaling drivers directly, the extra light would tell humans when to ...

Drivers react as Caltrans rolls out AI-controlled traffic lights along Highway 68 corridor ...

The city has been working with a platform called No Traffic for about five years; on its website, the company says among ...

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 ...

OTTAWA — The region’s cold snap may have left some hesitant about working out in the elements over the past few weeks, and that apparently included some traffic light control panels. Earlier in the ...

Ann Arbor's first dedicated bus lane with a transit-priority traffic signal gives buses an edge over other traffic. Here's ...

MADISON, Wis. -- The City of Madison received a grant from the Carbon Reduction Program that allows for a five-year plan to update the city’s traffic lights and signals. This project to "switch the ...

SCRANTON – In the works for years, plans to upgrade traffic light signals at three busy intersections finally have a green light to move ahead. In recent years, the state Department of ...