Using pedestrian attribute decisions
You can use a pedestrian attribute decision to assign a desired value to a pedestrian's attribute as soon as the pedestrian has entered one of the following network objects. No additional pedestrians are inserted into the network by a pedestrian input on the network object during this time step, and the movement of the pedestrians on the network object is completed (Defining pedestrian attribute decisions):
- Area
- Ramp
- Stairway
- Escalator
- Moving walkway
- Elevator
Attribute value can be computed using a formula
The attribute value can also be computed using a formula or determined based on a distribution defined within Vissim. If the attribute value is derived from calculated attribute values using a formula, Vissim utilizes the attribute values that arise after the pedestrians have completed their movement on the network object.
Pedestrian attribute decision on a ramp
Vissim considers an attribute decision on a ramp if the pedestrian utilizes the ramp to follow their pedestrian route. However, if the pedestrian only briefly enters the ramp and their pedestrian route does not traverse this ramp, the attribute decision is not taken into account.
Changes taken into account from pedestrian attribute decisions occurring in successive time steps
Successive attribute decisions in a time step take into account the changes resulting from the previous attribute decisions in the same time step. This principle applies to successive attribute decisions that impact a pedestrian. This pedestrian is not influenced by changes to attribute values resulting from attribute decisions made by other pedestrians in the same time step.
Pedestrian attribute decision of passengers alighting from a public transport vehicle
A passenger alighting from a public transport vehicle only makes an attribute decision in the time step during which they reach the platform edge. Until then, the public transport vehicle is assigned to the pedestrian as a design element.
Transfer attribute value to a pedestrian route
You can transfer the set attribute value to a pedestrian route. This allows you to select a route based on the attribute value (Modeling pedestrian routing decisions, pedestrian routes and partial pedestrian routes). You can restrict the attribute value to the required pedestrian classes (Defining pedestrian attribute decisions).
Change attribute value when entering and leaving with two pedestrian attribute decisions
If you want to change the attribute value when entering and leaving the network object, define two pedestrian attribute decisions on the network object, select theEntering for one and Leaving for the other (Defining pedestrian attribute decisions). Consider the effect of walking behavior (Modeling area-based walking behavior).
