Last Friday I think that I may have passed a mobile speed camera, not a problem normally, but on this occasion I was definitely exceeding the limit, through a set of roadworks where the limit had been reduced to 30 mph from 50 mph.
I am now waiting for the dreaded letter to fall through the letter box. As it's the first time I may have fallen foul of this, how long does it normally take before I am put out of my misery?
Do these mobile cameras normally operate in roadworks in the evening, it was around 7 pm?

