Citation

Senbil M, Kitamura R. IATSS Res. 2009; 33(2): 54-61.

Copyright

(Copyright © 2009, International Association of Traffic and Safety Sciences, Publisher Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Empirical observations were carried out using a 6-week travel survey, Mobidrive, to probe into the optimal duration problem of a single wave travel survey. The regressions on certain travel elements (i.e., number of daily trips, VKM per day, number of home based trip chains, daily travel time expenditure) suggest that a 2-week survey duration might serve well to represent personal variability in various dimensions. However further analysis conducted by using nonparametric survival analysis points to a longer period as the elapsed time between activity participation does not seem to converge to true values, at least for rare activities such as recreation.