Ключевые слова: 2, access, area, automatic, barricade, barrier, because, black, blockade, blocked, blockers, bollard, building, city, coaches, control, danger, enter, entrance, equipment, hydraulic, line, metal, passage, pole, preventing, prohibition, protection, reasonable, regulation, restricted, rising, road, roadblock, safety, secure, security, spoiled, steel, stop, street, stripes, traffic, transport, transportation, urban, vehicle, warning, yellow,