Answered: A car is approachin an intersection…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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1. A car is approachin an intersection with velocity 35 mph. When the car is at a distance of 200 ft from the intersection, the signal turned yellow. If the driver decides to break, will he be able to stop safely? The driver's reaction time is 1.5 s. Assume the road surface as leveled. The maximum braking effort is applied. Will your answer change, if the grade of the road surface is downhill 3%?

A car is at a distance of 200 ft from an intersection stop line when the signal turned yellow. What should be the minimum speed of the car (miles/hour) if the driver decides to apply brake and is just able to stop at the line? Use reaction time of 1.5 s and the road surface has zero grade.

Expert Solution

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$G i v e n D a t a : V e l i c i t y = 35 m p h . D i s \tan c e = 200 f t D r i v e r s r e a c t i o n t i m e = 1.5 s G r a d e o f t h e r o a d s u r f a c e = 3 % C a s e (2) D i s \tan c e = 200 f t R e a c t i o n t i m e = 1.5 s$

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