The simple fact that a movement occurs between an origin and a destination underlines that the costs incurred by a spatial interaction are lower than the benefits derived from such an interaction.
Mobility can be physical (passengers or freight) or intangible (information), and each form of mobility is subject to a form of friction.Įconomic activities are generating (supply) and attracting (demand) movements. They cover forms of mobility such as journeys to work, migrations, tourism, the usage of public facilities, the transmission of information or capital, the market areas of retailing activities, international trade, and freight distribution. These flows, known as spatial interactions, enable to evaluate the demand (existing or potential) for transport services.
Conditions for Spatial FlowsĮstimating flows between locations is a methodology of relevance to transportation. It is a transport demand / supply relationship expressed over a geographical space. A spatial interaction is a realized flow of passengers or freight between an origin and a destination.
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