Engineers are exploring a future white phase on U.S. traffic lights, showing how autonomous vehicles could coordinate movement at intersections.

Here’s what it signals—and why it makes a ton of sense.

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 ...

Those blue lights above traffic signals aren’t decorative. Here’s what they’re for and why more cities are installing them. Blue confirmation lights help police spot and enforce red-light violations ...

Your browser does not support the video element. Your browser does not support the video element. Someday, maybe, you'll be driving like usual, and you'll stop at a ...

Pull up to an intersection at a red light, eyes ahead, scanning left and right. Maybe the blue light from the traffic signal caught your eyes, like it did for Bob Thompson of Mill Creek. “What is the ...