F. Mannering et al., TEMPORAL STABILITY OF TRAVELERS ACTIVITY CHOICE AND HOME-STAY DURATION - SOME EMPIRICAL-EVIDENCE, Transportation, 21(4), 1994, pp. 371-392
This paper explores the temporal stability of activity type-choice mod
els and models of travelers' home-stay duration. To empirically evalua
te this stability, a nested logit model of activity-type choice and a
proportional hazards model of home-stay duration are estimated using d
ata from two-day travel diaries collected in the fall of 1989 and agai
n, from the same individuals, in the fall of 1990. The results show th
at the models are not temporally stable over the one year time period
separating the two travel-diary samples. A number of possible reasons
for this instability are discussed.