In America we like to build roads in such a way as they cannot reasonably work at posted speeds force everyone to speed somewhat and just pull over the minorities for speeding whilst black. For 20 years the maximum speed on the interstate highways was 55 mph or 88 kph. In case you aren't familiar with the vernacular.

Interstate: A high-speed, controlled-access road in the U.S. network of highways designed for long-distance travel and linking major urban areas

It's still common for there to be areas that for practical purposes roll at 10-15 mph over posted limit where literally every car is going that speed and being pulled over is basically a random act of police rather than actual normal law enforcement.