sentences:  Although cars and trucks are now allowed to use the left lane for the entire length of the transit mall, they are—with the exception of a very few locations—not permitted to turn right at "any" intersections.A motorist wanting to turn right from the transit mall must turn left, and make two additional left turns, to end up in the desired direction.This prevents cars' making right turns into the path of an oncoming bus or light rail car, which might be unable safely to stop in time to prevent a serious collision.