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A road is a narrow strip of land or the surface of an artificial structure, for example a dike or a bridge, that has been used and made suitable for road traffic. Roads are usually paved to improve or allow vehicle access. Roads are an important part of the traffic infrastructure. Roads usually refer to public roads, as in the rest of this article. However, there are also so-called "own roads" that are not public for road management. In a broader sense, one can define the road as the primary infrastructure for a particular mode of transport. For example, one speaks of railway and waterway. In some languages ​​even flight paths and cable cars are referred to as a kind of "road". Origin definition: Wikipedia. The roads that are part of a barrier are therefore located on a barrier or a sea dike. These can be paved or unpaved.