In some places, you may see police cars with their red and blue cruiser lights constantly on. While it can be confusing, they ...

Police cars have various lights they use to communicate with others on the road, but at times it can be hard to tell what exactly they're conveying. Red and blue flashing lights are standard and we ...

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 ...

If your TikTok feed is full of glowing, sci-fi-esque LED masks, you’re not alone. Red and blue light therapy devices have officially become the newest beauty shelfies, with creators flooding TikTok ...