1) The driver was actually speeding
and
2) The driver is trying to get off on a technicality
Is that the case?
In the US do you get "points" on your driving license so that if you are caught speeding several times in the space of a couple of years you get banned?
In the UK being caught mildly speeding (say doing 60 in a 50), in the course of 3 years it's typically
1st time: 3 hour course and £100
2nd, 3rd, 4th time: 3 points and £100
5th time: Driving ban and £100 (or more)