Repetitions in individual daily activity-travel-location patterns: a study using the Herfindahl-Hirschman Index

摘要

Using Herfindahl-Hirschman Index and the Mobidrive and Thurgau six-week travel diary datasets this paper examines the degree of repetition of individuals' choices of their daily activity-travel-location combinations. The results show that the repetitiveness of individual activity-travel-mode-location combinations is highly influenced by the individuals' out-of-home commitments, the intra-household conditions and the availability and the accessibility of the activity locations. Different types of activity have different pattern of repetition. The level of repetition of individual's daily activity-travel pattern is less correlated to travel mode choice, but more to the individuals' commitments and obligations. The repetitiveness of mode choices is more related to the conditions or the accessibilities of the activity location, but not directly to the activity itself.