A straight road alignment takes a bend and gets deflected by 78°. The road is to be designed for a design speed of 80 km/hr with a circular curve associated with two cubic spirals(as transition curves). The maximum rate of change of radial acceleration is 0.3 m/s²/s with a maximum permissible centrifugal ratio of 1/4. Determine: (a)The radius of circular curve (b) The length of transition curve (c) The total length of the combined curve

A straight road alignment takes a bend and gets deflected by 78°. The road is to be designed for a design speed of 80 km/hr with a circular curve associated with two cubic spirals(as transition curves). The maximum rate of change of radial acceleration is 0.3 m/s²/s with a maximum permissible centrifugal ratio of 1/4. Determine: (a)The radius of circular curve (b) The length of transition curve (c) The total length of the combined curve

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter15: Geometric Design Of Highway Facilities

Section: Chapter Questions

Problem 21P

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