Route choice method using the Quantity criterion
Vissim calculates the number of pedestrians in the areas of the pedestrian partial routing decisions. Then Vissim calculates the number of pedestrians in areas with the pedestrians' relevant partial routing decisions.
You can select the following Route choice parameters:
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Option |
Meaning |
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Best Route |
The user-defined percentage of pedestrians uses the best route. It follows the pedestrian route whose areas have the lowest number of pedestrians. These areas include the pedestrians' relevant partial routing decisions. If there are multiple best routes, the volumes are distributed equally across them. The remaining pedestrians are distributed randomly across the other routes. Default value of 90.00 %. |
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Kirchhoff |
Kirchhoff exponent E: The probability pi of a route choice is calculated as the quotient reciprocal of the number N of the relative volumes, to the power of negative Kirchhoff exponent -E, divided by the sum of these powers for all routes, default value 3.5. For two partial routes, the relative volume pi for partial route 1 is:
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Logit |
Logit - denominator c: The probability of a route choice is calculated as exponent e to the power of (the negative quantity -N divided by the user-defined denominator) c, divided by the sum of these powers for all routes, default value 1.00:
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Logit of reciprocal |
Logit of reciprocal - numerator z: the probability of a route choice is calculated as exponent e, to the power of (the numerator z divided by the quantityN), divided by the sum of these powers for all routes, default value 1.00:
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Combination method: Calculation of the number of pedestrians from the route choice areas
- Total: Total number from all route choice areas. When route choice areas overlap, these areas and the pedestrians there are each taken into account only simply.
- Average: Average number from all route choice areas
- Maximum: Maximum number from all route choice areas
- Minimum: Minimum number from all route choice areas
Applies to average, maximumand minimum: When route choice areas overlap, these areas and the pedestrians there are taken into account several times, and so the number of pedestrians for each area is determined separately.
