A Mechanism of Short Trip Generations using Discrete-Continuous Model with Activity Needs

Abstract

A spatial planning aimed for short trip generation is needed in city centers. This paper proposed an activity generation model with activity needs, focusing on activity histories and spatial attributes. The satisfaction of needs was incorporated into a discrete-continuous model as a discrimination function, and individuals continue activities until their satisfaction achieves the threshold. The model was formulated as a Type II Tobit model to analyze activity duration choice behaviors, and was estimated using Probe Person Data collected in Matsuyama City, Ehime. It was found that 1) the closeness between Entry Point and Main facility of a tour restricts sojourn behaviors both spatially and temporary, 2) accumulative shopping and leisure trips and a last eating trip promote an activity generation, 3) malls also showed a positive tendency.