This Is What Those Blue Lights On Top of Traffic Lights Are For

If you've ever driven through your neighborhood and noticed that someone had a blue light bulb for a porch light, you probably already knew that this is their way of showing support for local law enforcement. They're typically put up in honor of men and women who have given the ultimate sacrifice to keep our communities safe.

Blue lights used by law enforcement, however, have an entirely different meaning; especially when those blue lights are installed on stop lights.