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I have never really liked that in the USA, the posted speed limit is both the normal speed of travel and the maximum speed permitted. I think legally there should be some allowance for exceeding the speed limit when passing. We have some sections where one must move into the opposing traffic lane to pass, and you have to go over the posted limit to do this. I wonder how the self driving AI software accounts for this.

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> I think legally there should be some allowance for exceeding the speed limit when passing

There is. Or rather, there might be. In the US, some states allow you speed while passing. The qualifications on how much you can speed range from "reasonable margin of safety" to specific numbers. And, some states further limit the situations where you can do this, for instance to only allowing it on two lane roads where you're pulling into the oncoming lane to pass.

Mississippi allows for 5 mph at the discretion of the officer. But they generally don't seem to bother in my area unless you're going 15-20 mph over or more.

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