Physics · Highway Geometric Design

A road bend deflecting by 80° is to be designed. The maximum speed is to be 2 km/min, maximum centrifugal ratio is 0.25, and the rate of change of radial acceleration is 300 mm/s 3 . If the circular arc is combined with two cubic spirals, the radius of the circular arc will be about:

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453 m

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A road bend deflecting by 80&deg; is to be designed. The maximum speed is to be 2 km/min, maximum centrifugal ratio is 0.25, and the rate of change of radial acceleration is 300 mm/s 3 . If the circular arc is combined with two cubic spirals, the radius of the circular arc will be about: