>and the safe speed for those conditions is consistently higher than the posted limit.
A cursory look at traffic safety statistics would seem to dispute this statement. The US consistently ranks quite high in traffic fatalities, which seems to indicate that you couldn't safely drive faster than the current speed limit in most circumstances. Of course you'd have to control for a lot of other factors for a definite conclusion, but conversely, I'd like to see an actual source for your theory.
Enforcing a speed limit is actually not that hard if you want to. You can of course put stationary or mobile speed cameras in place. But even better may be systems I've seen in some places in southern Europe: Cameras at the beginning and end of a stretch of highway that compare time stamps of your passing and calculate the average speed of your car in that stretch. If you've passed the stretch quicker than should be possible according to the speed limit you'll be fined. It's quite low tech, cameras are prevalent on the highway systems of many countries, anyway, and it solves the problem of people adhering only to the speed limit if they know they are being observed by law enforcement.
A cursory look at traffic safety statistics would seem to dispute this statement. The US consistently ranks quite high in traffic fatalities, which seems to indicate that you couldn't safely drive faster than the current speed limit in most circumstances. Of course you'd have to control for a lot of other factors for a definite conclusion, but conversely, I'd like to see an actual source for your theory.
Enforcing a speed limit is actually not that hard if you want to. You can of course put stationary or mobile speed cameras in place. But even better may be systems I've seen in some places in southern Europe: Cameras at the beginning and end of a stretch of highway that compare time stamps of your passing and calculate the average speed of your car in that stretch. If you've passed the stretch quicker than should be possible according to the speed limit you'll be fined. It's quite low tech, cameras are prevalent on the highway systems of many countries, anyway, and it solves the problem of people adhering only to the speed limit if they know they are being observed by law enforcement.