This study examines the temporal and regional stability of individual travel behavior using 1971 and 1982 person trip survey data in Okayama Area and 1980 data in Matsuyama Area. The statistical analysis is done for five different travel patterns including trip rate, number of trip chain, number of sojourn, daily travel time and trip pattern. The log-linear model analysis is employed to investigate the interaction between travel patterns and socio-demographic variables. The result shows that most of travel patterns are stable over time and between regions.
