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,

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Q: Explain Darcy’s Law for Flow.

A: Darcy’s law:

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A: Let’s solve the above equation of axial deformation by taking an example:

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Q: * Surface Integrals

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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.