> The reason I know this to be true is because the proportion of drivers who speed on any given road varies wildly with the road.
Another way to arrive at this conclusion is that if the speed limit is both 65 for trucks and cars its trivially not the limit of how fast one can safely drive. And as expected, you see trucks going 65 while cars speed around them at 70+.
And also the inability for people to use the pedal and the steering wheel at the same time resulting in large 15+ mph speed drops around a highly visible curve.
Another way to arrive at this conclusion is that if the speed limit is both 65 for trucks and cars its trivially not the limit of how fast one can safely drive. And as expected, you see trucks going 65 while cars speed around them at 70+.
And also the inability for people to use the pedal and the steering wheel at the same time resulting in large 15+ mph speed drops around a highly visible curve.