superelevation

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noun su·per·el·e·va·tion \-ˌe-lə-ˈvā-shən\

Definition of superelevation

  1. 1 :  the vertical distance between the heights of inner and outer edges of highway pavement or railroad rails

  2. 2 :  additional elevation

1840

First Known Use of superelevation

1840


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