What is superelevation in railway?
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Superelevation, also called cant, is a term used to describe the amount of banking added to railway tracks in order to counterbalance the effects of centripetal forces. This is done to ensure the lateral stability of a train when it is travelling at high speeds around a curve.
The banking angle increases the centrifugal force, which opposes the centripetal force generated by the turn. This helps prevent the train from capsizing or having its wheels leave the track.