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TNMA LQ for Lecture 7

Authored by Yongyang Liu

Engineering

University

Used 2+ times

TNMA LQ for Lecture 7
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. What is the primary objective of system optimal traffic assignment?

(a) To ensure that every traveler experiences the same travel time

(b) To assign all traffic to the path with the lowest free-flow travel time

(c) To minimize the total system travel time

(d) To ensure no user can improve their travel time by unilaterally switching routes

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2. In a traffic network, the user equilibrium solution ensures that the travel time is equal on all used routes for each O-D pair.

(a) True

(b) False

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. 3. Under both the UE and SO principles, is it possible that some network links remain unused?

(a) True

(b) False

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

4. The figure shows a network with one origin-destination (O-D) pair and the corresponding link performance functions. The total demand for the O-D pair is 200 vehicles per hour (vph). Denote x1, x2, and x3 as the traffic flows on link 1, link 2, and link 3, respectively. Which of the following flow patterns satisfies the user equilibrium (UE) condition?

(a) x1 = x2=100, and x3 = 0

(b) x1 = x3 = 0, and x2 = 200

(c) x1 = 150, x2 = 50, and x3 = 0

(d) x1 = x2 = 0, and x3 = 200

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

5. The figure shows a network with one origin-destination (O-D) pair and the corresponding link performance functions. Which of the following flow patterns satisfies the user equilibrium (UE) condition, if O-D demand is smaller than q'?

(a) Only link 1 used

(b) Only link 2 used

(c) Both links used

(d) Neither link is used

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