The outputs from the second step are also called O/D pairs (Tij) and show us the number of trips between zone I (origin) and zone J (destination) (Levine, 2010). In the second step, we use these results as input for the trip distribution estimations. ![]() We estimated trip generation and attractions for a study area from the first step of FSM. In this chapter, we will discuss trip distribution as the second step of FSM. How should we balance trip attraction and production after performing trip distribution? Explain.What are the friction factor and K-factor in trip distribution, and how do they help to calibrate model results?.What are the advantages and disadvantages of the three trip distribution methods (gravity model, intervening opportunities, and Fratar model)?.What factors affect the attractiveness of the zones in trip distribution, and what input data is needed to measure such attractiveness?.
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