Partial flow bundles, single object conditions, and set conditions

A flow bundle can consist of one or more partial flow bundles. A partial flow bundle applies to a combination of transport system type and a set of demand segments. Several partial flow bundles are always connected by an OR link. For example, you can define a partial flow bundle for private transport and the demand segment car and another private transport partial flow bundle for the demand segment truck, where the path filter criterion can differ. The network editor displays all PrT volumes that fulfill the corresponding condition for the respective demand segment.

Single object conditions and/or set conditions can be defined for each partial flow bundle.

For single object conditions, first select the network object type. The conditions can then be defined by marking one or more objects of this network object type in the network. If you mark several objects one after the other, specify the order in which these objects are to be crossed on a path. If you restrict yourself to one network object type, the following types of flow bundles can be distinguished:

  • Node, main node, stop point, stop area, stop, and sharing station flow bundle (selection of nodes, main nodes, stop points, stop areas, stops, or sharing stations)

  • Link flow bundle (highlighting links)

  • Zone and main zone flow bundle (highlighting zones or main zones)

Which network object types are offered for single object conditions depends on the transport system type. When selecting the single object conditions, single objects of different network object types can also be combined with each other (Combining flow bundle criteria).

For set conditions, you select a set of objects of a network object type and define for this condition which traffic types apply to this set. For example, you restrict the condition to active links in a territory and calculate the through traffic for these links. You can use set conditions to calculate different traffic type flow bundles by setting links or network objects in the line hierarchy passive.

Notes: If a flow bundle is active, its demand can be saved as a flow bundle matrix of the respective demand segment. The flow bundle considers the active settings of the OD pair filter. This allows you to perform flow bundle analyses that are additionally defined via a zone type (e.g. for internal zones only).