The maximum super-elevation to be provided on a road curve is 1 in 15. If the rate of change of super-elevation is specified as 1 in 120 and the road width is 10 m, then the minimum length of the transition curve on either end will be (a) 180 m (c) 80 m (b) 125 m (d) 30 m

The maximum super-elevation to be provided on a road curve is 1 in 15. If the rate of change of super-elevation is specified as 1 in 120 and the road width is 10 m, then the minimum length of the transition curve on either end will be (a) 180 m (c) 80 m (b) 125 m (d) 30 m

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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Concept explainers

Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.

Question

Solve the first question only,,,

. The maximum super-elevation to be provided on a
road curve is 1 in 15. If the rate of change of
super-elevation is specified as 1 in 120 and the road
width is 10 m, then the minimum length of the
transition curve on either end will be
(a) 180 m
(c) 80 m
(b) 125 m
(d) 30 m
A horizontal curve of 480 m radius for 7.5 m two lane
road is to be designed for a speed of 80 km/h. The
raising of the outer edge of pavement with respect to
the centre line to cater the mixed traffic condition is

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