I will be away from home for 4 or 5 weeks, and yesterday I approached a police speed trap van while doing about 41/42 in a 40 limit zone, and quickly dabbed the brakes to get it just below 40. I know they are supposed to give you an allowance but am concerned that if they write to me, I will not be able to reply in the allotted time, consequently, is there any way that I can determine if I am being charged for speeding?