Answered: A highway has on average a vehicle…

A highway has on average a vehicle every 28 ft while queuing. What is the jam density in veh/mi/ln? If the free-flow speed of 65 mph, what is the Greenshields speed when the density is 35 veh/mi/ln?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 25P

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Concept explainers

Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

Question

I am rather confuse on this one

A highway has on average a vehicle every 28 ft while queuing. What is the jam density in
veh/mi/ln? If the free-flow speed of 65 mph, what is the Greenshields speed when the density
is 35 veh/mi/ln?

Expert Solution

Step 1

Given:

On average a vehicle every 28ft while queueing

Free flow speed 65mph

Required :

Jam density

Speed when density is 35

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