What does the arrow on the sign indicate?
A)One-way.
B)It recommends the side of the refuge through which vehicles can pass.
C)The side of the refuge through which vehicles must pass.Correct
This round sign with a blue background is a mandatory sign, not a recommendation. The arrow indicates the only side of the refuge or island through which vehicles must pass. Therefore, it is prohibited to drive on the side opposite to where the arrow points.