[whimsicalism]

You get far more localized really shitty situations if you devolve to that level. Sometimes central decision making is good.

Having to switch the mode of operation of your car depending on what side of various county lines you are on seems like an obvious regulatory failure.

[SuoDuanDao]

The error rate would certainly go up at first due to the additional complexity, but the cost of each error goes down. Besides, I have to switch the speed at which I'm driving far more granularly than at county lines, and no one's worried about a car's ability to handle that.

I don't disagree that sometimes central decision making is good, but in a complicated situation where any decision will have some negative consequences depending on the specific context seems like a textbook case of not being one of them.