Information on the demand within a planning area is required for the analysis of transportation networks. Demand matrices can only partially be created based on survey data. That is why mathematical models are used to reproduce real demand ratios, which calculate the traffic flows between the zones of the planning area on the basis of the structure and behavior data, the spatial utilization structure and the transport system. Another function of such a model is the provision of prognoses and scenarios.
Visum currently offers the following procedures for demand modeling:
- Standard 4-step model in two variants
- EVA (passenger demand model)
- Activity chain based model (tour-based model)
- Activity-based model (ABM)
- Tour-based freight model
There are also the following functions available to calculate the transportation demand:
