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Manual gates are sometimes hung in the manner of a normal gate (i.e. hinged horizontally). In some places, bar gates are installed across suburban streets as a traffic calming measure, preventing through traffic, while allowing authorised vehicles such as emergency services and buses to take advantage of the shorter and more direct route.
Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...
A barrier being moved on the Golden Gate Bridge Hinge pin used as the linkage of moveable barriers [1] This large machine was used on the Auckland Harbour Bridge to shift the center lane back and forth to accommodate rush hour traffic. Road Zipper machine at the Golden Gate Bridge, San Francisco, California.
A level crossing with manually-controlled full barriers at Chertsey, England. The barriers are rising. A four-quadrant gate or full-barrier equipment is a type of boom barrier gate protecting a grade crossing. It has a gate mechanism on both sides of the tracks for both directions of automotive traffic.
A removable guardrail as median barrier. In traffic engineering, a highway guardrail may prevent an errant vehicle from hitting roadside obstacles, which may be either man-made (sign structures, culvert inlets, utility poles) or natural (trees, rock croppings), running off the road and going down a steep embankment, or veering off the roadway ...
Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.
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