For PuT, you can define flow bundle conditions, using the criterion PuT supply. It allows you to filter paths by network objects that traverse them using a specific transport system, line, etc. A path is only included in a flow bundle if it uses the selected PuT supply at the network object.
You can choose between different types of PuT supply. The options are: transport systems, main lines, lines, line routes, time profiles, vehicle journeys and operators. Vehicle journeys and operators require a timetable-based assignment, for which paths are saved as connections.
The results obtained with the supply filter depend on the network object type:
- nodes and links represent fairly simple examples. The supply filter criteria is met if the node or link is traversed by the supply selected. Thereby it is irrelevant whether the paths traverses the node or link, or starts or ends there.
- For zones and main zones, the supply filter filters the first or last path leg - depending on whether you choose to filter by origin or destination traffic. The options Also PuT-Walk TSys and Also PuT-Aux TSys are taken into account when Visum checks the connector node of the path. Consequently, a path starting or ending with a PuT-Walk or PuT-Aux transport system belongs to the flow bundle if the respective option has been activated or the first or last path leg is used for the PuT supply selected.
- For stop points, stop areas and stops, Visum distinguishes between two cases:
- When determining the number of passengers transferring, you can set supply filters with the criteria "alighting" and "boarding". This, for instance, allows you to filter all paths that at a stop switch from long-distance transport to local transport.
Just as for the zones, the options PuT-walk and PuT-Aux play a special role. If you select "boarding" and the option Also walk TSys, you will also filter by all transfers that after alighting include a footpath - independent of the PuT supply the passengers alighted from. The same applies respectively for the option Also Aux TSys.
- For all other passenger types, the supply filter is used as described for nodes and links.
When using the traffic type flow bundle conditions for active links, you can additionally filter the PuT supply. The PuT supply filter is applied directly to the active links. For a traffic type-based flow bundle, a link on a PuT path is considered active if both the link itself and the PuT supply on it are active.
Volumes from flow bundle routes are output in the list PuT assignment statistics.
