i was reading in last months fast and modified that those average speed scamerascan only calculate if you stay in the same lane between the 2 cameras i.e if you go through the 1st one on the inside lane then go through the second one on the outside lane it wont register, any1 know any more about this (theres loads of em round me)
although the new bf does all the driving at mo and i get lift to work with me mum to keep the miles down on the tiggy! lmao!