Question

1.Explain the difference between deterministic and stochastic user equilibrium with an example. Which one is more...

1.Explain the difference between deterministic and stochastic user equilibrium with an example. Which one is more realistic and why?

2.Explain with an example why an activity based model is a better representative of daily urban travel than a four-step model.

3.The system utilities for Public Transit (PT) and Car (C) mode are:

Vc = 0.238 – 0.350TTc

Vpt = -0.531TTpt

Calculate the probability of choices for following trips:

Trip

Travel Time Car (TTc)

Travel Time Public Transit (TTpt)

1

5

30

2

5

85

Explain the probability values for two trips. Also calculate the following for trip 1:

  1. Direct elasticity of travel time for car [1-Pn(i)xinkbk]
  2. Cross elasticity of travel time for car on public transit [-Pn(j)xjnkbk]
  3. What do the values in a. and b. mean? Please be specific.

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