Design Superel

Use the Design Superel option to design a superelevation diagram that is used to superelevate the left and/or right hand sections of a roadway. This may be necessary for roadways with a sharp turn and a small radius of curvature as a vehicle entering the turn is propelled out by the centrifugal forces at a tangent to the curvature.

To counteract centrifugal forces, the vehicle may either decrease its travelling speed or the road surface may be cambered as it is at a velodrome or racetrack.

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Instructions

On the Iroad menu, point to Edit, and then click Design Superel.

You are transferred to the LONG_SECT window. The Design dialog box is then displayed.

New Superelevation

Select this option to start a new superelevation.

Old Superelevation

Select this option to modify an existing superelevation.