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Superelevation on compound curves.

Superelevation on compound curves.

Superelevation on compound curves.

I am currently designing an urban 4-lane divided highway through a small town.  A compound curve consisting of four simple curves has the following design parameters: Curve 1, Design speed 80km/h, R=469.50, e=4.8%, Curve 2, Design speed 80km/h, R=405.11, e=5.1%, Curve 3, Design Speed 60km/h, R=425.16, e=3.7%, and Curve 4, Design Speed 60km/h, R=186.60, e=5.4%.  What would be the recommended superelevation rate to use throughout the compound curve.


RE: Superelevation on compound curves.

Decide yourself looking table III-7 to 11 in A Policy on Geometric Design of Highways and Streets 1994 and other information in the same book.

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