A 12 ft long loop detector has observed six vehicles that have crossed the device in a 148 second period, for the following durations: 0.44; 0.48; 0.5; 0.41; 0.49; and 0.55. The six vehicles are 18, 21, 20, 23, 17 and 19 ft respectively. a. How long is the total time for the detector to be occupied? b. What is the % lane occupancy? c. How many vehicles per mile density value, k? d. How many miles per hour is the rated speed, v? e. How many vehicles per hour current value, q?
A 12 ft long loop detector has observed six vehicles that have crossed the device in a 148 second period, for the following durations: 0.44; 0.48; 0.5; 0.41; 0.49; and 0.55. The six vehicles are 18, 21, 20, 23, 17 and 19 ft respectively. a. How long is the total time for the detector to be occupied? b. What is the % lane occupancy? c. How many vehicles per mile density value, k? d. How many miles per hour is the rated speed, v? e. How many vehicles per hour current value, q?
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter6: Fundamental Principles Of Traffic Flow
Section: Chapter Questions
Problem 16P
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A 12 ft long loop detector has observed six vehicles that have crossed the device in a 148 second period, for the following durations: 0.44; 0.48; 0.5; 0.41; 0.49; and 0.55. The six vehicles are 18, 21, 20, 23, 17 and 19 ft respectively.
a. How long is the total time for the detector to be occupied?
b. What is the % lane occupancy?
c. How many vehicles per mile density value, k?
d. How many miles per hour is the rated speed, v?
e. How many vehicles per hour current value, q?
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