Curves are curved sections of road that connect straight paths in different directions. When the road to Aliyman intersects with a second aliyman, since the railway vehicles cannot pass through this cornered section, they can only pass through the roads called curves (curves). Since the most regular curve will be the arc of a circle, curves on the railway are also arcs of a circle with a certain radius. Curves are divided into two groups, horizontal curves and vertical curves.
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