Horseshoe curve

The horse shoe shape gives the curve its name.

Flåmsbana, 1926 shortly after construction Credit: Anders Beer Wilse

A horseshoe curve is a reversing curve through a single tight curve in a railway or a road, through an angle of about 180 degrees or more. The U shape, or even slight balloon shape, of such a curve resembles a horseshoe, hence the name. On roads such curves, if tight enough, are typically called hairpin turns.

单词	Horseshoe curve
释义	Horseshoe curve 英语百科 Horseshoe curve A horseshoe curve is a reversing curve through a single tight curve in a railway or a road, through an angle of about 180 degrees or more. The U shape, or even slight balloon shape, of such a curve resembles a horseshoe, hence the name. On roads such curves, if tight enough, are typically called hairpin turns.
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