Yes, there are irresponsible motorists and, they don't all get caught but, lots DO and are punished by fines and bans. I'm struggling to recall seeing a cyclist pulled over by the police as I drive along or see news of fines or bans in the court report of the local paper.
Sadly, the Rozzers don't enforce things like this unless you do it right under their noses and even then They would probably only get a talking to. I've got about 25 years driving experience with no points on my licence but every day I see Cyclists ignoring red lights, cycling on and off the...