A snow-covered traffic light with a bus and other vehicles in the background - Scharfsinn86/Getty Images There was a time when most traffic lights worked by relying on timers. This isn't ideal, as ...

The concept of the traffic light actually dates all the way back to the 1860s, where gas-lit signals were placed on the posh streets that lined the Houses of Parliament in London. Of course, back then ...

There was a time when most traffic lights worked by relying on timers. This isn't ideal, as anyone who's sat muttering at a stoplight in the middle of the night without any other cars on the road can ...