Not really. Lots of police in at least some rural areas in the US have had a practice of not ticketing people for speeding less than 10 miles over the speed limit on the high-speed county roads and state and US highways. I have had more than my fair share of hearing that sticking to 6-9 mph over the speed limit would commonly be tolerated by their departments/offices. Of course things aren’t necessarily uniform and static when it comes to this, but for one or more reasons the tolerance for speeding on the higher speed roads is greater than it is in say a 15-25mph zone near a school or hospital. In one place where I encounter a 15mph speed limit, 5 over has been a fine and a foreign licensed driver pulled into the station to pay the fine on the spot or face being held for a hearing. Go out ten minutes, and then going 8/9 mph over the speed limit gets a pass perhaps even from the very same LEO/LEA.