Question: 7 . A one - way street has a mean speed of 4 0 mph and a jam density of 6 0 vehicles per mile

7. A one-way street has a mean speed of 40 mph and a jam density of 60 vehicles per mile under normal peak hour conditions. Construction adjacent to the roadway causes reduced flow for 15-minutes. It is observed that the speed through the lane blockage is 20 miles per hour and that 1,600 veh/hr can pass through the construction site. What is the length of the queue at the time the construction restriction is removed?

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