I just went to court to fight 3 speeding offences that got me (in ute) at that horrible fixed camera on lanyon, near jerra. Long story short, the speedo was out so much that at 80km on speedo, actual speed travelled was 92km. Got free legal advice and was advised I had a case. I initially pleaded not guilty, which got the RTA into a spin and adjourned the hearing so they could check the camera. Was unecessary as one year later (and on the 3rd court appearance), I was advised to plead guilty with circumstance. By pleading guilty, it meant that I was disputing the operational capability of the camera, which was not the case. I spoke to the court magistrate (not the judge), and , as I had the mechanical certificate to prove my case, given my good driving record (I must be a boring driver!!!), and that I came prepared, all charges were dismissed. Funny thing, the RTA record had my birthdate as 1 Jan 1900, which had the court in stitches, this had no bearing on the case at all. Sorry for the long post, but just a bit of support for you if you do decide to go to court. It can be done, just do your homework, and dress well at court! Good luck Andrew.