The main time in my experience that Radar Detectors are useful are in long, flat, relatively safe speeding areas such as Great Plains states. The rest of the time, the difference between going 9 over (the speed at which you’re basically guaranteed never to get pulled over) and going 20 over as a percentage gain over your base speed is actually unsafe due to cars, turniness of roads, and visibility.
The main time in my experience that Radar Detectors are useful are in long, flat, relatively safe speeding areas such as Great Plains states. The rest of the time, the difference between going 9 over (the speed at which you’re basically guaranteed never to get pulled over) and going 20 over as a percentage gain over your base speed is actually unsafe due to cars, turniness of roads, and visibility.