Particularly in urban areas a large amount of traffic is caused as a result of economic activities. These include various trip purposes, such as the delivery and distribution of goods, the supply of construction materials and disposal of construction waste or the provision of services, e.g. through craftsmen or nursing services. Tour-based freight transport largely differs from passenger transport in terms of its characteristics and spatial and temporal trip distribution.
For modeling tour-based freight, there is a separate demand model available that includes the corresponding demand objects and procedures. Key elements of the model are based on the WIVER model (Sonntag, 1995), jointly developed by IVU and PTV in the 90s and applied in numerous transport models. This model allows you to model origin and destination traffic resulting from orders as well as interrelations between different industries. On this basis, you can then model how these orders are delivered in trips. The model provides the necessary data structures for modeling sector requirements and delivery concepts or vehicle types.
