Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.

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

Gov. Josh Shapiro announced a program to invest nearly $30 million into municipal traffic signal upgrades to enhance safety and improve traffic flow across Pennsylvania.

Emergency traffic lights are coming to Duneland communities, improving safety when police and fire departments respond to a ...

This is where traffic-light countdown timers help. They are digital displays that show the number of seconds remaining before ...

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 ...

Across the United States, drivers are looking up at intersections and noticing a new, unfamiliar glow: small blue lights perched near traditional red, yellow and green signals. They are not decorative ...

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 ...