Assume that the speed-density function of a section of a highway follows the Greenshieldsmodel. The free-flow speed is 75 mph and the jam density is 176 veh/mi/In. Derive V as afunction of S. In 15 minutes, you have counted that V = 150 veh/15-minute/In. Estimate thetwo possible speeds S (in mph) during this 15-minute period.

Solution: Given: Free-Flow speed (Sf)=75mph Jam density (Kj)=176veh/min/ln Density…

Assume that the speed-density function of a section of a highway follows the Greenshields model. The free-flow speed is 75 mph and the jam density is 176 veh/mi/ln. Derive V as a function of S. In 15 minutes, you have counted that V = 150 veh/15-minute/In. Estimate the two possible speeds S (in mph) during this 15-minute period.

Assume that the speed-density function of a section of a highway follows the Greenshields model. The free-flow speed is 75 mph and the jam density is 176 veh/mi/ln. Derive V as a function of S. In 15 minutes, you have counted that V = 150 veh/15-minute/In. Estimate the two possible speeds S (in mph) during this 15-minute period.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 10P

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