Defining partial pedestrian routing decisions

You define the partial pedestrian routing decision by adding the first route location, with which a partial pedestrian route starts, to the desired area. You may select attributes, such as the decision model, the path choice method and the route choice method. In addition, you can select the pedestrian classes that should consider the partial pedestrian routing decision. Based on the partial pedestrian routing decision you define one or several partial pedestrian routes which run through other areas or over other ramps. Using intermediate points in areas and on ramps allows you to model the course of the route. If multiple partial pedestrian routes begin at the partial pedestrian routing decision, their destinations must be located in the same area.

If a partial pedestrian route traverses multiple areas or includes areas and ramps, additional partial pedestrian routes can be inserted to create a "nested" structure for partial pedestrian routes. Introducing nested partial pedestrian routes can simplify tracking the path of a pedestrian who has deviated from their initial route. The partial route of the new partial routing decision must lead back to the previous partial route and its destination. The new partial route does not replace the previous partial route.

Notes:

You can specify that you need not press the Ctrl key when adding network objects (Right-click behavior and action after creating an object).
For some network objects there are windows in which the attributes of a network object can be defined and edited. There are lists for this, for all network objects. You can choose whether you want to open a window, a list or neither of the two for the definition of network objects in the Network Editor (Right-click behavior and action after creating an object).

On the network object sidebar, click Pedestrian Routes.

The button is highlighted. The variant of the network object type is displayed in parentheses and the button is shown.

1. Click Pedestrian Routes again.

A list box opens.

2. Then click Partial.

3. Press the Ctrl key and in the Network editor, right-click the area of your choice.

4. Release the keys.

For the first routing point, a red circle is inserted by default. If you want to insert multiple pedestrian routes for this first routing point, carry out the following steps accordingly. This allows you to add a destination and pedestrian partial route.

The window Pedestrian Routing Decision (Partial) opens.

5. Make the desired changes:

Element	Description
Decision	Number of partial pedestrian routing decisions
Start area	Name of area for which the partial pedestrian routing decision has been defined. In the list box, you can select another area as your start area.
Destination area	is empty before you insert the partial pedestrian routing decision. Afterwards, it shows the name of the destination area.
Destination ramp	is empty before you insert the partial pedestrian routing decision. Afterwards, it shows the name of the destination ramp.
Decision models	Select option: Entering the area: The partial pedestrian routing decision takes effect as soon as the pedestrian enters the area. Select this option when decision-relevant criteria are likely to change rather quickly, e.g. when you select the Static route choice method which has the same number of route choices for the pedestrian routes. Every time step: The partial pedestrian routing decision takes effect at each time step during which the pedestrian is in the area. Select this option when there are only minor or no changes to the decision-relevant criteria, e.g. when you select the Density route choice method in order to find an area with the lowest density.
Pedestrian classes	Select option: All pedestrian types of pedestrian class individual pedestrian classes
Route choice method	Select the static or dynamic route choice method (Route choice method for partial pedestrian routes): Static (Defining static pedestrian routes) Travel time (Route choice method using the Travel time criterion) Service point selection (Route selection method Use service point selection) Quantity (Route choice method using the Quantity criterion) Density (Route choice method using the Density criterion) Formula: Define a formula (with the attribute and attribute value) for the corresponding partial pedestrian, which defines the percentage of pedestrians using this partial pedestrian route (Attributes of partial pedestrian routes).
Path choice method	Method of selecting the stairs, ramp or elevator between the decision on the current area and the next route location. Area center (default): Selects the smallest total direct line distance: from the center of the area on which the decision is made as soon as the pedestrian enters the area to the center of the area on which the next route location is located If the pedestrian can reach several ramps, stairs or elevators, the path choice method Area center can lead to longer paths than the path choice method Pedestrian position, because it is not the position of the pedestrian that is decisive, but the position of the area center points. Pedestrian position: Selects the link to the first ramp, stairs or the next elevator from the current position of the pedestrian. This is especially useful for expansive areas where pedestrians have multiple options, such as using various ramps, stairs, or elevators to reach the next route location. The path choice method Pedestrian position can affect the speed of the simulation, as an individual shortest path search is calculated for each pedestrian. The path choice method Pedestrian position cannot be selected for ramps. Since the selected path choice method is used between the decision and the next route location, you can specify the path choice method for each individual partial pedestrian route.

6. Point the mouse pointer to the destination area of your choice.

The border of the destination area is highlighted.

7. Press the Ctrl key and right-click in the destination area.

8. Release the keys.

By default, a turquoise circle is inserted. By default, a yellow band is shown between the red circle of the first route location of the partial pedestrian route and the destination. The Partial Pedestrian Routing Decisions list opens if automatic opening of a list after object generation is selected (Right-click behavior and action after creating an object). You may add further partial pedestrian routes to areas based on the route location or stop the addition.

9. To insert additional pedestrian routes (partial), point the mouse pointer to the desired area of your next destination and repeat the steps.

When you point the mouse pointer to an area, a yellow line to the first route location of the pedestrian route (partial) will appear by default.

10. If you do not want to add any additional pedestrian routes (partial), in the network editor, click in an empty area.

Especially when defining several pedestrian routes from the first routing point of a pedestrian route, use intermediate points in areas and on ramps to model the course of a route (Modeling the course of pedestrian routes using intermediate points).

11. You can edit the attributes (Attributes of partial pedestrian routes), (Attributes of partial pedestrian routing decisions).

The attributes are saved to the respective list.

12. Define route choice areas for the route choice methods Quantity and Density or generate the route choice areas automatically (Selecting route choice areas).

Superordinate topic:

Modeling pedestrian routing decisions, pedestrian routes and partial pedestrian routes