Trip generation

Trip generation is the first step in the transportation forecasting process used for forecasting travel demands. It predicts the number of trips originating in or destined for a particular traffic analysis zone (TAZ). Trip generation analysis focuses on residences and other land uses to forecast the number of motorized person-trips or vehicle trips originating from or ending at a specific location. At the level of the traffic analysis zone, residential land uses "produce" or generate trips. Traffic analysis zones are also destinations of trips, trip attractors. The analysis of attractors focuses on non-residential land uses.

This process is followed by trip distribution, mode choice, and route assignment.