Road barriers metal barrier type 11ДО according to GOST 26804–84, Dnipropetrovsk region.

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Road barriers are designed to prevent a vehicle from leaving the shoulder and bridge structure, crossing the dividing line, colliding with an oncoming vehicle, hitting massive obstacles and structures located on the side of the road and in the right-of-way, on the dividing line (retaining barrier for cars), falling pedestrians from the bridge structure or embankment (retaining barriers for pedestrians), as well as for regulating the movement of pedestrians and preventing animals from entering the roadway (limiting fence).(//tractor-service.com)
Metal road barriers of the barrier type are installed on public roads in populated areas, on highways and highways. In addition, they are used in the construction of access roads to industrial enterprises and on domestic roads.
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