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7. When becomes possible to have a high density on a highway, but a flow of approximately 0 veh/hr?

7. When becomes possible to have a high density on a highway, but a flow of approximately 0 veh/hr?

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Answer question 7
7. When becomes possible to have a high density on a highway, but a flow of approximately 0 veh/hr? 8. The following figure shows an example of an aerial photo taken of 500 ft of roadway. It shows vehicles traveling at constant speeds on a rural highway of two-lanes (one per direction). A researcher standing at the beginning of the section observed 3 vehicles passing during a period of 11 seconds. The velocities of each vehicle across the 500 ft were as 60 mph, 30 mph and 40 mph, respectively. Calculate the flow, density and space-mean-speed based on the schematic. 160' 60' 20¹ 20¹ 120' 40 mph 30 mph B 500' 20¹ 60 mph A 100' Direction of flow
Transcribed Image Text:7. When becomes possible to have a high density on a highway, but a flow of approximately 0 veh/hr? 8. The following figure shows an example of an aerial photo taken of 500 ft of roadway. It shows vehicles traveling at constant speeds on a rural highway of two-lanes (one per direction). A researcher standing at the beginning of the section observed 3 vehicles passing during a period of 11 seconds. The velocities of each vehicle across the 500 ft were as 60 mph, 30 mph and 40 mph, respectively. Calculate the flow, density and space-mean-speed based on the schematic. 160' 60' 20¹ 20¹ 120' 40 mph 30 mph B 500' 20¹ 60 mph A 100' Direction of flow
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