Answered: Why extra widening of road is required…

Engineering

Civil Engineering

Why extra widening of road is required at horizontal 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 7P

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Question

Why extra widening of road is required at horizontal curve?
Determine the super-elevation in inch for a 60 feet wide road with a design speed of 70 mile/hr.
and degree of curvature 8° ; ? = 0.155.

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