When you hear the phrase “bathroom occupied indicator light,” you might picture something straight out of a sci-fi movie. But trust me, it’s becoming a real game changer in public and even private ...

Today's busy roadways need signal lights to keep traffic flowing and prevent accidents. Here's what the traffic light symbols ...

If you own a Raspberry Pi 2 or later, there are only two LED lights to be concerned of, one green and one red. The position of the lights varies between models, however, each light is labeled ...

Four red flashes along with a solid green light in your Tesla charger mean that the temperature of the wall plug is quite high. Contact an electrician to get your power outlet checked and ensure ...

This is to assist emergency vehicles that don't already have equipment to turn all lights red if necessary. Unless you can flash your high beams 14 times in a second, let the waiting continue.

Google, for example, is rapidly expanding a one-year-old product, called Green Light, that will create “green waves”—that is, one green light after another—in 14 cities where the system is ...