ay nas ulre n), n accident occurs and stops all traffic. At t = 20 [min], the accident is cleared, and the highway returns to s original capacity. What are the values of lambda (^) and mu (µ) at t= 30?

ay nas ulre n), n accident occurs and stops all traffic. At t = 20 [min], the accident is cleared, and the highway returns to s original capacity. What are the values of lambda (^) and mu (µ) at t= 30?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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After mall opening, the traffic volume (demand) in a certain road section (6-lane divided highway)at the peak hour is forecasted to be 5200vph. An accident blocks 1 lane of the highway. It took15 minutes till the accident is cleared and capacity is fully restored. Use the following speeddensity relationship: u=112.81-1.75k (u is speed in kph and k is density in vpk/lane) to answerthe following questions:a.) Determine the free-flowing speedb.) Compute for the shockwave between the free-flow state and the state where there iscapacity reduction due to accident.c.) Compute for the shockwave between state when there is capacity reduction due toaccident and the state where vehicles flow with full section capacitySHOW FULL SOLUTION
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Engineering /Civil Engineering /Transportation Engineering
Question 1 In studying traffic flow at a highway toll booth over a course of 60 minutes, it is determined that the arrival and departure rates are deterministic, but not uniform. The arrival rate is found to vary according to the function of A (t) = 1.8 2 +0.25t -0.0030t. The departure rate function is u(t) =1.4 + 0.11 t. In both of these functions, t is in minutes after the beginning of the observation and X(t) and u(t) are in vehicles per minutes. (i) When will the queue that forms be cleared? (ii) What time does the maximum queue length occur and what will be the corresponding queue length? (iii) Determine the total delay (iv) Estimate the average time delay per vehicle
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