Controlled-access freeways (interstates, motorways, autobahns) have much lower accident rates per mile than other roads with lower speed limits and more distrac

Controlled-access freeways (interstates, motorways, autobahns) have much lower accident rates per mile than other roads with lower speed limits and more distractions. Of course, the two broad categories of road largely serve different purposes, so one can't go around replacing side streets with freeways, either.