The divider uses road division or road division.
Answers 2 and 3 are wrong because the content is completely different, there is no road division and road division .
Part of the road used to divide the road surface into two separate lanes or to divide the road part of motor vehicles and rudimentary vehicles.
Is the part of the road to determine the boundary of the land for the road in the horizontal direction of the road.
Part of the road to separate vehicles from entering unauthorized places.