Political will.

The rules and numbers are allowed to be what they are so long as mass tasteful/mild noncompliance is tolerated. The second you start robotically (electronic robots vs meat robots in uniform does not matter in this case) fining people for taking lefts on red arrows at 1am or exceeding the speed limit a bit in the base case you will see politicians pandering to voters by changing those rules such that the typical person can behave typically without any particular care to abide by them and generally not break them.