TEMPORAL STABILITY OF URBAN TRAVEL PATTERNS

Abstract

This study examines the temporal stability in several indicators of travel patterns of urban residents using 1965 and 1980 origin-destination survey results from a metropolitan area in the United States. The analysis examines trip chaining, sequencing of activities, transition between activity types, and time-of-day dependencies of activity choice, as well as trip rates and trip durations. The results show that, in spite of the qualitative similarities in activity scheduling, many aspects of travel patterns including trip rates do not possess quantitative stability over time. This is also the case for sample subgroups defined in terms of such commonly used factors as auto ownership. The study points out the instability in travel patterns as an additional element of uncertainty in long range policy development, demand forecasting, and evaluation of user benefit. (Author/TRRL)

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