To be honest, the speed trap warnings are sort of useless.
The data is just too dynamic. Presumably, someone sees a police care and reports it. Sixty seconds later, they're a mile down the road, and the officer has already pulled someone over.
By the time I get the warning on Google Maps, the officer has finished writing that ticket and set up at another location. Or maybe gone off shift for the day.
It's probably better to always let someone else be the fastest driver on the road. They'll "find" the speed traps for you, in real time.