Practice User Equilibrium Assignment (ue) (10.4) - Traffic Assignment - Transportation Engineering - Vol 1

Practice: User equilibrium assignment (UE)

Lesson 10.4Traffic Assignment

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8 questions

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6 sample questions

Question 1.
Define User Equilibrium in your own words.
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Think about the concept of minimizing costs.
Question 2.
What principle is User Equilibrium based upon?
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Recall the key figure in transportation theory.
3Question 3.
What does User Equilibrium ensure?
- No driver can reduce their travel costs by changing routes
- All drivers take the same route
- There are no congestions in the model
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Focus on the definition of the principle at hand.
4Question 4.
Wardrop's principle states that:
- True
- False
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Try to recall who proposed the principle.
Question 5.
In a simplified urban scenario, you have two parallel routes from A to B with respective flow functions. Apply UE principles to model the flows and calculate the optimal route allocations between the two paths.
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Remember to apply the flow conservation and the conditions of User Equilibrium.
Question 6.
Given a network where you know the travel time functions for several routes, use a nonlinear programming approach similar to Frank-Wolfe to confirm User Equilibrium for these paths. Report final route costs.
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Review the initial steps of the optimization process we discussed.

4 more questions in this section. Enroll free to practise them all.