Wasn't there recently a huge story in Devon, Alberta about a brand new, i dunno "photo tech" wasn't trained properly. And there were people getting up to 4 tickets a day going back and forth on the highway? a whole bunch of people complained and I seem to recall they threw out all tickets in a couple week span. I'm not sure if I'm recalling correctly the story it was awhile ago. However, It does prove that these photo radar set ups are not infallible. Like someone else said though, how much is your time worth to you? Good luck