Suppose that a crash occurs on a two lane highway, blocking one lane for 45 minutes and dropping the capacity of the other lane by 70% for the same time period. After 45 minutes, the crash and emergency vehicles are cleared from the road and capacity of each lane returns to its normal value of 2000 vehicles/hour/lane. If vehicles approach the section at a rate of 2500 vehicles/hour and the queuing system can be assumed to be D/D/1: What is the length of the longest queue? vehicles How many minutes after the crash occurs does the queue clear? minutes

Suppose that a crash occurs on a two lane highway, blocking one lane for 45 minutes and dropping the capacity of the other lane by 70% for the same time period. After 45 minutes, the crash and emergency vehicles are cleared from the road and capacity of each lane returns to its normal value of 2000 vehicles/hour/lane. If vehicles approach the section at a rate of 2500 vehicles/hour and the queuing system can be assumed to be D/D/1: What is the length of the longest queue? vehicles How many minutes after the crash occurs does the queue clear? minutes

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter4: Traffic Engineering Studies

Section: Chapter Questions

Problem 21P

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