Example □ If the Greenshields model describes the relationship between speed and density on the highway, the jam density of the highway is 112 veh/mi, and the mean free speed is 64.5 mi/h. The capacity of a highway is suddenly reduced to 60% of its normal capacity (maximum flow) due to closure of certain lanes in a work zone. □ If the traffic flow at upstream is 80% of the normal capacity of the highway, determine by what percentage the space mean speed at the vicinity of the work zone will be reduced compared to the speed of the traffic flow in the upstream,

Example □ If the Greenshields model describes the relationship between speed and density on the highway, the jam density of the highway is 112 veh/mi, and the mean free speed is 64.5 mi/h. The capacity of a highway is suddenly reduced to 60% of its normal capacity (maximum flow) due to closure of certain lanes in a work zone. □ If the traffic flow at upstream is 80% of the normal capacity of the highway, determine by what percentage the space mean speed at the vicinity of the work zone will be reduced compared to the speed of the traffic flow in the upstream,

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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