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An obstacle (also called a barrier, impediment, or stumbling block) is an object, thing, action or situation that causes an obstruction. [1] A obstacle blocks or hinders our way forward. Different types of obstacles include physical, economic , biopsychosocial , cultural, political, technological and military.
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.
1 See also. 2 References. ... Concrete barrier. A roadblock is a temporary installation set up to control or block traffic along a road. The reasons for one could be:
Staffed checkpoints usually consist of a barrier with observation towers and other physical blocks used to control pedestrian and vehicular access. There are flying checkpoints which are unannounced spot-checks spontaneously erected for a period of time, often on key transportation routes at peak travelling times. In July, August and September ...
Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so dÉ™ lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...
For British anti-tank obstacles, see: British anti-invasion preparations of World War II#Lines and islands. The Korean Demilitarized Zone is known to have very large minefields. The Berlin Wall used many different obstacles, including several types of anti-tank obstacles.
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Barricade (from the French barrique - 'barrel') is any object or structure that creates a barrier or obstacle to control, block passage or force the flow of traffic in the desired direction. Adopted as a military term, a barricade denotes any improvised field fortification, such as on city streets during urban warfare.