10. Traffic Assignment

Try these first

1. 1.

   What is the main goal of traffic assignment?

   Hint

   Think about what traffic assignment aims to achieve.

2. 2.

   Define User Equilibrium in traffic assignment.

   Hint

   Consider the implications of cost and path choice.

3. 3.

   What is the primary objective of traffic assignment?

   • Minimizing travel cost
   • Allocating trips based on demand
   • Reducing congestion

   Hint

   Consider what traffic assignment fundamentally seeks to achieve.

4. 4.

   True or False: All-or-Nothing Assignment considers multiple paths for each O-D pair.

   • True
   • False

   Hint

   Reflect on the model's definition.

5. 5.

   Given a network with 3 origin-destination pairs, use User Equilibrium to calculate the assignment when provided with travel times and flows.

   Hint

   Focus on the equations and the relationship between flows and costs.

6. 6.

   Create a System Optimum Assignment for a simplified two-node network. What implications do you notice compared to the User Equilibrium results?

   Hint

   Think of how these optimal routes may differ due to the model's assumptions.