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Determine the grades of a symmetric VC that requires a stopping sight distance of 434.3 ft and minimum length of VC 873.9 ft. Determine also the maximum speed limit to be imposed

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter7: Intersection Design

Section: Chapter Questions

Problem 19P

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Concept explainers

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.

Question

SUBJECT: HIGHWAY AND RAILROAD ENGINEERING

2. Determine the grades of a symmetric VC that requires a stopping sight distance of 434.3 ft
and minimum length of VC 873.9 ft. Determine also the maximum speed limit to be imposed
if it is to be by increments of 5 mi/hr and 10 mi/hr. Assume vehicle eye levels of 3.5' and 2.0',
both situated inside the VC. Use the same deceleration value in the previous problem.

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