A problem is that the speed limits are often not even properly signposted. Also, lane markings are often not properly painted. I automate the remote backup of my dashcam over cellular data and keep the records for at least a year.
I don't see why me or my wife should pay erroneous tickets and in the last year I've successfully had two tickets cancelled on video evidence, one for doing 120 in a 90 zone (there were no signs reducing to 90 and I could prove it) and the other for turning right at a junction in a lane intended for going straight (the lane marking clearly indicated I could do both). I use that same junction daily, and I had a chuckle two weeks later when the entire junction was repainted with the correct lane markings. So complaining DOES work.
Rules are fine, I'm all for road rules and enforcement, but they must be clearly defined, rational, fair, and properly enforced. Otherwise, they simply don't work. The authorities are clearly struggling with this and I would encourage people to dispute tickets that are obviously wrong.