Changes in Variations of Travel Time Expenditure: Some Methodological Considerations and Empirical Results from German Mobility Panel

摘要

Bearing improvement of evaluation methods of the benefits from transport infrastructureinvestment in mind, this paper attempts to develop a method for capturing changes invariations of travel time expenditure, and show the empirical results by using GermanMobility Panel data, a multi-day and multi-period panel data. The proposed methodology candeal with changes and variations simultaneously and explicitly. The empirical analysisindicate that travel time expenditures become more dependent on the situational attributes,rather than their individual or household attributes, implying that the travel time expenditureschange towards diversifications and that longer behavioral observation becomes moreimportant to describe people’s travel time expenditure. The results also imply that theunderstanding of dynamic aspects of behavior is still important and remain as a bigchallenging issue to be revisited, not only for improving forecasting models, but also forreconsidering the benefits from transportation investment.