If you're visiting Canada and see a stoplight with unique light shapes for each of the signals, you're not seeing things.

Driving in a different country presents a unique set of hazards, with one of the biggest being that there will inevitably be some different road traffic laws that you'll need to come to grips with.

Today's traffic lights can be controlled by anything from standard traffic control computers to highly advanced AI-driven computer systems that are so "smart" they can predict what's going to happen ...

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.