Table 2 shows the Fresno County Employment Projections for 1990 to 2020. The following sections explain each of the four steps. Trip Distribution Trip distribution determines where the trips developed in trip generation will go. The trips are connected between TAZs based on the relationship data previously input into the model. Newton's law states that the attractive force between two bodies is directly related to their size and inversely related to the distance between them.
Distance is expressed as miles of travel.
For example, a person who travels 15 miles to work is not expected to travel that far for convenience shopping purposes. Mode Choice Mode choice predicts how the trips will be divided among the available modes of travel. In the Fresno County model, mode choice is a tool which applies vehicle occupancy rates to the trip matrix to determine the number of vehicle trips. Vehicle occupancy rates used in the Fresno County model are shown in Table 3. This is the modeling output most familiar to all users.