An accident occurs on a one-lane highway and blocks off all lanes of traffic. This freeway has a jam density of 130 veh/mi. Before the accident occurred (and upstream of the queue that forms), traffic was (is) traveling at an average speed of 45 mi/h and density of 30 veh/mi. Assume that the following conditions are present: = Before the queue: Uupstream 45 mi/h, kupstream = 30 veh/mi After the queue: Udownstream = 60 mi/h, kdownstream = 0 veh/mi Jam Density: kj = 130 veh/mi How long is the queue after 25 minutes?
An accident occurs on a one-lane highway and blocks off all lanes of traffic. This freeway has a jam density of 130 veh/mi. Before the accident occurred (and upstream of the queue that forms), traffic was (is) traveling at an average speed of 45 mi/h and density of 30 veh/mi. Assume that the following conditions are present: = Before the queue: Uupstream 45 mi/h, kupstream = 30 veh/mi After the queue: Udownstream = 60 mi/h, kdownstream = 0 veh/mi Jam Density: kj = 130 veh/mi How long is the queue after 25 minutes?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![An accident occurs on a one-lane highway and blocks off all lanes of traffic. This freeway has a
jam density of 130 veh/mi. Before the accident occurred (and upstream of the queue that
forms), traffic was (is) traveling at an average speed of 45 mi/h and density of 30 veh/mi.
Assume that the following conditions are present:
●
●
Before the queue: Uupstream = 45 mi/h, kupstream = 30 veh/mi
After the queue: Udownstream = 60 mi/h, kdownstream = 0 veh/mi
Jam Density: kj = 130 veh/mi
How long is the queue after 25 minutes?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59dcf694-031d-4f76-a440-48333e300efe%2F44ea96f5-ce43-4b22-af40-e1dac9d96d33%2F9lnkhbk_processed.png&w=3840&q=75)
Transcribed Image Text:An accident occurs on a one-lane highway and blocks off all lanes of traffic. This freeway has a
jam density of 130 veh/mi. Before the accident occurred (and upstream of the queue that
forms), traffic was (is) traveling at an average speed of 45 mi/h and density of 30 veh/mi.
Assume that the following conditions are present:
●
●
Before the queue: Uupstream = 45 mi/h, kupstream = 30 veh/mi
After the queue: Udownstream = 60 mi/h, kdownstream = 0 veh/mi
Jam Density: kj = 130 veh/mi
How long is the queue after 25 minutes?
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