has undertaken a survey that shows country more than three-quarters of the UK's speed cameras are inactive.
It seems that your chances of getting flashed greatly vary depending on where you drive, however.
All 20 permanent cameras in West Mercia were operational, and you'd be snapped by 96 per cent Lincolnshire's, while 94 per cent of Avon and Somerset's speed cameras were found to be switched on.
Nottinghamshire and Bedfordshire also ranked pretty highly in the cameras-on stakes, with 78 per cent and 77 per cent respectively.
On the other hand, a scant 11 per cent of Staffordshire's cameras were working, with Gloucestershire, Thames Valley and Derbyshire on 12 per cent and Surrey running on a mere 24 per cent of its potential number of fixed speed cameras.
So the moral to the tale seems to be that you're safest from scameras just west of London (or in the north-east Midlands), but that you'd better be darn careful in Lincolnshire or Somerset.
A small word of warning, though; Dorset, Hertfordshire, Merseyside, Norfolk and Suffolk all refused to reveal just how many of their cameras were working...