> The normal way you resolve this sort of thing in the law is by setting a legal limit which is objectively reckless, e.g. by setting the speed limit to 125 MPH. Then you aren't actually expected to drive 124 MPH, you're still expected to drive around 65 MPH, but we can reasonably say that if you're caught doing 130 there you're deserving of some penalties.

I can't think of any teenage boy I've ever known who would have driven anywhere near 65 mph if the speed limit were 125 mph, no matter how much they were told that people were "expected" to drive around 65 mph.