I sat next to a Colorado State Trooper on a flight from Denver. Didn't find out till the end of the flight, but I had to ask him about how much over the speed limit someone had to be before he would ticket them. He hemmed and hawwed, but said about 20 MPH over the speed limit on highways before he would pull someone over. And depending on their attitude, he might only give them a warning. He also said he would pull over anyone over the speed limit in school zones. Take it with a grain of salt.