A surprising amount of technology might be making that red light hold you up. Here's how traffic lights detect (or don't detect) your vehicle.

SALT LAKE CITY — For anyone who's ever been frustrated waiting at a red light when no other cars are coming — this article is for you. Our KSL team has had its own frustration with lights that don't ...

Seeing Green, a short film by Chevrolet, celebrates the many kinds of traffic lights that were in operation in the 1930s and explains the mechanics of coordinating lights across a city. Seeing Green, ...

Traffic lights have been with us since 1868, when the first gas-powered set was switched on in London. These lights used a semaphore system similar to those used by the railways of the day and ...

If you've ever wondered how traffic lights work and how they can detect your car, you've probably also been curious about those small blue lights mounted above the signals themselves. These blue ...

Local News Mass. drivers are baffled by these new traffic lights — here’s how they work Hybrid traffic lights, designed to make crossings safer, are confusing motorists across the state — and some ...

Modern traffic light technology isn't just a simple sequence of red, yellow, and green. It's a complex detection system designed to manage traffic flow based on real-time demand. The very first "smart ...