No offense, but this is the dumbest idea. This system you’ve proposed allows for absolutely negligent recklessness, until (not unless) someone gets hurt. Teenagers or other irresponsible people would just go batshit until they killed someone, and only then, would we be able to stop the reckless behavior, which could easily have been predicted to have killed someone? No thanks, I don’t want to live anywhere near your society. We can certainly argue about whether the max limit should be 55 or whatever, but not that there are limits in general.