I live in Italy and we have tutors on the highways who calculate the average speed
via cameras that mark the entry and exit times of cars within a stretch of road. It would be incredible to integrate a function that indicates how much longer you have to stay within this zone to avoid the fine, an idea would be to use the formula:
Time in minutes = (distance/speed)*60

by doing this you could have a timer which, if respected, would avoid the fine

(furthermore, an indicator could also be integrated that tells you at what speed you must continue to allow you to exit the zone at the indicated time)