A section of highway has a linear speed-density relationship. The capacity of the roadway is 3,751 veh/hr and this capacity is observed at an average speed of 40 mi/hr. What speed is observed when traffic is congested with a flow of 1,053 veh/hr?

A section of highway has a linear speed-density relationship. The capacity of the roadway is 3,751 veh/hr and this capacity is observed at an average speed of 40 mi/hr. What speed is observed when traffic is congested with a flow of 1,053 veh/hr?

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 21P

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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

A section of highway has a linear speed-density relationship. The capacity of the roadway is 3,751 veh/hr and this capacity is observed at an average speed of 40
mi/hr. What speed is observed when traffic is congested with a flow of 1,053 veh/hr?

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