Investigating inter-generational changes in activity-travel behavior: a disaggregate approach

Meng Zhou, Donggen Wang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

8 Citations (Scopus)


Investigation into the long-term trends in travel behavior is crucial for strategic development of transport systems and decisions about investment in transport infrastructures. There has been a debate about if there is a constant amount of time allocated for travel and thus an upper limit to daily travel demand. Recent studies have suggested a stagnated and even declining trend of car ownership and travel demand in developed countries (the so-called ‘peak car’ and ‘peak travel’ phenomenon). This study aims at exploring the possible long-term trends in activity-travel behavior in Hong Kong to shed some light on the ‘peak travel’ debate. We have acquired two large-scale datasets from Hong Kong’s Travel Characteristics Survey conducted a decade apart and applied propensity score matching to match individuals of similar socioeconomic backgrounds from different time periods and compare their activity-travel behavior. Results indicate that households and individuals with similar socioeconomic backgrounds at the two periods have distinctively different car ownership levels and daily travel and activity behaviors.

Original languageEnglish
Pages (from-to)1643-1687
Number of pages45
Issue number5
Early online date16 Feb 2018
Publication statusPublished - Oct 2019

Scopus Subject Areas

  • Civil and Structural Engineering
  • Development
  • Transportation

User-Defined Keywords

  • Activity-travel behavior
  • Hong Kong
  • Inter-generational changes
  • Peak travel


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