On a specific westbound section of highway, studies show that the speed-density relationshipis (a) On a specific westbound section of highway, studies show that the speed-density relationship3.5It is known that the capacity is 4200 veh/h and the jam density is 210 veh/mi. What is the space-mean speed of the traffic at capacity, and what is the free-flow speed?

u = uf1-kkj3.5 ......1 u =Space mean speed uf = Free flow speedk = Traffic densitykj = Jam density…

Answered: u=uf It is known that the capaciry is…

u=uf It is known that the capaciry is 4200 veh/h and the jam density is 210 veh/mi. What is the space- mean speed of the traffic at capacity, and what is the free-flow speed?

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

On a specific westbound section of highway, studies show that the speed-density relationship
is

(a) On a specific westbound section of highway, studies show that the speed-density relationship
3.5
It is known that the capacity is 4200 veh/h and the jam density is 210 veh/mi. What is the space-
mean speed of the traffic at capacity, and what is the free-flow speed?

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