At the time of publication I.N. Sener was at Texas Transportation Institute and C.R. Bhat was at the University of Texas at Austin.This study presents a unified framework to understand the weekday recreational activity
participation time-use of adults, with an emphasis on the time expended in physically active
recreation pursuits by location and by time-of-day. Such an analysis is important for a better
understanding of how individuals incorporate physical activity into their daily activities on a
typical weekday, and can inform the development of effective policy interventions to facilitate
physical activity. Furthermore, such a study of participation and time use in recreational activity
episodes contributes to activity-based travel demand modeling, since recreational activity
participation comprises a substantial share of individuals’ total non-work activity participation.
The methodology employed here is the multiple discrete continuous extreme value (MDCEV)
model, which provides a unified framework to explicitly and endogenously examine time use by
type, location, and timing. The data for the empirical analysis is drawn from the 2000 Bay Area
Travel Survey (BATS), supplemented with other secondary sources that provide information on
physical environment variables. To our knowledge, this is the first study to jointly address the
issues of ‘where’, ‘when’ and ‘how much’ individuals choose to participate in ‘what type of
(recreational) activity’.Civil, Architectural, and Environmental Engineerin
