A new freeway ramp meter will be installed on the Medina onramp to westbound SR 520. There is 70 ft from the ramp meter stop line back to the nearest intersection, and each stopped vehicle takes up an average of 20 ft. The desired meter rate is one vehicle every 10 seconds while the arrival rate averages one vehicle arrival every 11 seconds. What is the average queue length?

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter8: Intersection Control
Section: Chapter Questions
Problem 8P
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A new freeway ramp meter will be
installed on the Medina onramp to
westbound SR 520. There is 70 ft
from the ramp meter stop line back
to the nearest intersection, and
each stopped vehicle takes up an
average of 20 ft. The desired meter
rate is one vehicle every 10 seconds,
while the arrival rate averages one
vehicle arrival every 11 seconds.
What is the average queue length?
55ft
O 4.5 ft
100ft
90ft
Transcribed Image Text:A new freeway ramp meter will be installed on the Medina onramp to westbound SR 520. There is 70 ft from the ramp meter stop line back to the nearest intersection, and each stopped vehicle takes up an average of 20 ft. The desired meter rate is one vehicle every 10 seconds, while the arrival rate averages one vehicle arrival every 11 seconds. What is the average queue length? 55ft O 4.5 ft 100ft 90ft
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