Show Posts - AaronH201216

Hi all, First time posting so be gentle. I was driving back from Weston on the M5 yesterday, staying between 60/70 and I noticed that on 3 separate occasions there was a flash behind me. Im pretty sure the stretch of the M5 is variable and no gantries were lit.My question is, do speed cameras usually go off for no reason? I don't usually drive on motorways and not sure if it's something to do with calibration or a random trigger to remind people that they are actually there?Just found it really weird that they went off for no apparent reason.