Confused about what to do at a red light? Here's when it's legal to turn, what flashing signals mean, and who can go through ...

Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.

It seems to be a universal experience for drivers that the more anxious you are to get to your destination (or the later you're running), the more likely those lights are to be red. Typically, they'll ...