Here's how traffic lights actually work, and how they detect your car

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

What Are Those Little Cameras Above Traffic Lights Actually For?

Traffic lights have been with us since 1868, when the first gas-powered set was switched on in London. These lights used a semaphore system similar to those used by the railways of the day and ...

No, not all traffic lights have cameras - here's how to possibly identify those that do

Figuring out the placement of traffic lights with cameras isn't always a straightforward process.
BGR

Those Little Cameras On Top Of Traffic Lights Aren't All For Catching Red-Light Runners

While we may be used to seeing cameras on top of traffic lights at major intersections, they're used for more than simply watching out for red-light runners. In fact, there are two main types of ...