Most major highways don't allow pedestrian or bicycle traffic (among other things). Most roadways don't allow unlicensed vehicles. You can't go start up a pick

Most major highways don't allow pedestrian or bicycle traffic (among other things). Most roadways don't allow unlicensed vehicles. You can't go start up a pickup hockey game in the middle of a major road. This is all regulated. You can't just go use a road for any old reason, just because it's perfectly capable of being used for that reason.