The division of trips between different modes of travel (private transport, public transport).

Usually used to describe trip ends connected with non-residential land uses in a zone. Also defined as the non home end of a home based trip or the destination of a non home based trip.

An assumed point in a zone that represents the origin or destination of all trips to or from that zone. Generally, it is the weighted centre of trip ends, rather than the geometrical centre of a zone.

An indication of the proximity of a person, site or zone to a particular activity or group of activities. It is also defined as the ease or difficulty of making trips to or from each zone.

Data that relates to a mass of group of people, vehicles or area. The collective properties of the variable are of interest.

The AON (all-or-nothing) assignment technique by which minimum travel time paths are computed for each zone pair and all flows between these pairs are loaded onto these paths.

A traffic assignment technique that takes into account the build up of congestion with increased traffic volumes. It adjusts the link travel times according to the prevailing flows.

Imaginary links that represent the street network within a zone. They ‘connect’ trips from a zone to the modelled network.

The point or area of termination of a trip.

Data at the level of individual persons, households, etc.