Say hello to FRED – feu de ralentissement éducatif – which the French Canadian government is testing out as an "educational traffic calming light" that does more than "educate."

FRED has built-in radar that "educates" itself about the speed of an approaching car; if the car is going faster than whatever the programmed in speed limit is, it turns red – and stays red – stopping the car (and traffic) for no other reason, such as cross traffic. These FRED lights are installed in the manner of speed bumps.