Effect of Trip Purpose on Psychological Process for Car Use Reduction

The objectives of the paper are to investigate process of voluntary change in travel behavior and to evaluate the impacts of psychological factors by trip purpose. For the analysis, a total of 1,000 samples, randomly selected from three cities in the Seoul Metropolitan area in Korea were used. The survey questionnaire contained 10 sections (including four sections for psychological factors) and 19 questions. We also constructed three psychological process models by trip purpose (Commuting, Shopping, and Leisure trip) based on a structure equation model using AMOS 16 software. The estimation results showed there are different variables that can affect the process of voluntary car use reduction and the coefficient of trip purpose. Furthermore, this paper suggests an effective MM policy guideline that considers the features of trip purpose based on the estimated models.