A vehicle moving at 40km/h speed was stopped by applying brake and the length of the skid mark was 12.2 m. if the average skid resistance of the pavement is 0.70, the brake efficiency of the test vehicle will be nearly?

A vehicle moving at 40km/h speed was stopped by applying brake and the length of the skid mark was 12.2 m. if the average skid resistance of the pavement is 0.70, the brake efficiency of the test vehicle will be nearly?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter21: Pavement Management

Section: Chapter Questions

Problem 10P

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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.

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A vehicle moving at 40km/h speed was stopped by applying brake and the length of the skid
mark was 12.2 m. if the average skid resistance of the pavement is 0.70, the brake efficiency
of the test vehicle will be nearly?

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really need help asap pls