What does this sign mean?
A)The arrow indicates the direction and sense that vehicles are obliged to follow.Correct
B)The arrow indicates the side of the refuge, island or obstacle along which vehicles must obligatorily pass.
In the sign in question, the arrow indicates the direction and sense that vehicles are obliged to follow. It will be prohibited both to change direction and to change sense.
Answer b) would be correct if the sign were any of the following:
Answer b) would be correct if the sign were any of the following: