The danger from sharp turns
in roads is so well recognized that state systems are now specifying a minimum radius of 200 feet and when practicable laying curves out very much flatter. The pavement is also being widened at the turns so as to allow the same turning radius on the inner as on the outer track in order that the temptation for vehicles to cross over to the other track may be lessened.
Pavements should be widened on a curve so that the inner row of vehicles may pass around on the same curvature as the outer row.