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MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305577398
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
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Question
Chapter 10, Problem 6P
To determine
The three components of total control delay of a given lane group.
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An intersection of four phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in table pictute below. Calculate the sum of flow ratios for critical lane groups.
A signalized intersection has two lane groups. The two WBT lanes (lane group #1) have a total volume of 863 pc/h and an average control delay of 24.5 seconds. The one WBL lane (lane group #2) has a volume of 203 pc/h and an average control delay of 36.5 seconds. What is the approach's LOS?
Group of answer choices
LOS A
LOS D
LOS C
LOS B
3. An intersection approach has two lane groups: left-turn lane group, and through/right-turn lane
group. The control delay is 37 seconds/vehicle for the left-turn lane group, and 27
seconds/vehicle for the through/right-turn lane group. The analysis flow rate is 97
vehicles/hour for the left-turn lane group, and 450 vehicles/hour for the through/right-turn lane
group. Calculate the approach control delay and write the corresponding level of service (LOS)
for the approach in the box below.
Chapter 10 Solutions
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
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- Under what condition is a value of 0.5 assigned to the parameter K in the expression for the lane group delay calculation?arrow_forwardAn signalized intersection located in Baghdad Capital with four phases, if EYi=0.77, lost time for each phase (Lt = 3.0 sec. ).The cycle length for this signalized intersection is equal: * 100 sec. 110 sec. O 107 min. O 41 sec. O 105 sec.arrow_forwardTRANSPORTATION ENGINEERING-TRAFFIC SIGNALS" Recent analysis at an approach to pre-time signalized intersection indicate that the volume-to-capacity ratio (v/c) is 0.8, htat saturation flow rate (s) is 1600 vehicles/hour, and the effective green time is 50 seconds. If the average delay, assuming D/D/1 is 11.25 seconds per vehicle, determine the arrival flow rate (vehicles/hour) and the cycle length.arrow_forward
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