Hi, Today I received an infringement notice for speeding in a 60 kmh zone. The detected speed was 74 kmh and the alleged speed was 71 kmh. The incident occurred on my way back from Saturday's practice session on Oct 29th on the Beach road, Mordialloc between the Bay and Owen streets (these intersections are 450 meters apart). Luckily (?) for me, I had my onboard digital camera recording during that period of time, so I reviewed this particular part of my trip to ensure that I wasn't speeding. Unfortunately, my camera doesn't imprint any timestamps on the video, so the only way to prove that the video was taken on that day and time is to ask people who were still at the practice session when I departed (e.g. Hawklord). But most importantly, there is no speed indication on the recorded video, hence I the only way to prove that I was under at least 70 kmh is to sample the time between intersections and then do some math (well, the distance was 260 meters and covered it in 14 seconds, i.e my speed was 66.8 kmh -- yes, I know it's already 1 point, but not 3, right?). I was taking only 260 meters into consideration since the rest of the distance I was slowing down. OK, here is a question -- should I go ahead and try to challenge the allegation? Do I have enough evidence that I wasn't doing 70+ there, hence 3 demerit points look excessive? I'd appreciate any feedback since it's my first speeding ticket on the bike.