SPEEDING ADVICE PLEASE.

[turbobungle]

My brother got caught 'speeding' on the A45 a couple of weeks ago. He was alledgedly doing 58mph in a 50mph limit. However, the scamera that got him was in the middle of a bunch of 13 scameras in a ten mile stretch of road. He knew they were there as he does the journey all the time and he reckons he stuck to 50 the whole way through the run of 13 scameras. Could it be that this one scamera is not calibrated correctly as it seems strange that only one of the thirteen got him. Does anyone know how often scameras need to be calibrated for their 'evidence' to be admissable? Do the scamera partnerships have to prove the accuracy of their scameras etc.? Any advice please!