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

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.

Some things are so ubiquitous that it's easy to forget they're designed for a reason. With more than 300,000 traffic lights set up across the United States, it's easy to take how they look for granted ...

As cars and trucks get smarter and more connected, the humble lights that have controlled the flow of traffic for more than a century could also be on the cusp of a major transformation. Researchers ...

Look closely, and you might find that there are more variations in traffic lights than you realized. Some have white lights that aren't meant for car drivers, while others have inconspicuous white ...