However these design choices are made solely and explicitly to enforce speed limits.
No, they’re designed to discourage people from exceeding the design speed, which is different.
But still people who speed chose to speed. They chose to violate the traffic rules and they chose to endanger other people and themselves. So speeding is never a “symptom” of road design. It is always a “symptom” of selfish assholes that should not be given the right to operate dangerous vehicles.
Jeez, it’s not as if the vast majority of speeders are mustache-twirling villains doing it for the evulz who are incorrigible short of being punished by the law! They just think it’s safe to be driving that speed because the overly-generous street design misleads them.
Look, here’s the bottom line: the whole concept of a “speed limit” only exists in the first place because of a mismatch between the design speed and the speed people want to drive, which makes it unsafe. If you fix the geometry of the street to eliminate the mismatch such that the speed people want to drive at is safe, you don’t need the limit anymore and can just fall back on “reasonable and prudent.”
Y’all are acting like we need speed limits for their own sake, just to have something to enforce.