A developer wants to provide access to a new building from a driveway placed 1000 ft upstream of a busy intersection. He is concerned that queues developing during the red phase of the signal at the intersection will block access. If the speed on the approach averages 35 mi/h, the density is 50 veh/mi, and the red phase is 20 sec, deter- mine if the driveway will be affected. Assume that the traffic flow has a jam density of 110 veh/mi and can be described by the Greenshields model.
A developer wants to provide access to a new building from a driveway placed 1000 ft upstream of a busy intersection. He is concerned that queues developing during the red phase of the signal at the intersection will block access. If the speed on the approach averages 35 mi/h, the density is 50 veh/mi, and the red phase is 20 sec, deter- mine if the driveway will be affected. Assume that the traffic flow has a jam density of 110 veh/mi and can be described by the Greenshields model.
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Transcribed Image Text:Chapter 6
Fundamental Principles of Traffic Flow
261
A developer wants to provide access to a new building from a driveway placed 1000 ft
upstream of a busy intersection. He is concerned that queues developing during the
red phase of the signal at the intersection will block access. If the speed on the
approach averages 35 mi/h, the density is 50 veh/mi, and the red phase is 20 sec, deter-
mine if the driveway will be affected. Assume that the traffic flow has a jam density of
110 veh/mi and can be described by the Greenshields model.
6-12
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