AbstractAn integrated model of vehicle transactions, activity scheduling and mode choice is estimated based on a retrospective vehicle transaction survey in the Toronto Area. First a conceptual framework is presented which links long run decisions of automobile transactions with short run decisions of activity participation, travel and mode choice. The concept of activity/travel stress is introduced to represent the difference between household activity/travel with the current vehicle fleet and that associated with alternative fleets due to purchase or disposal of a vehicle. The concept of stress is operationalized with a utility-based formulation in which two measures of activity/travel stress are simulated for each household, mode choice utility gained by making a vehicle transaction, and the change in number of conflicts experienced in the household over a limited number of vehicles. These measures are simulated with multiple replications of an activity-based microsimulation model of activity scheduling and mode choice that explicitly represents household interactions of vehicle allocation, ridesharing and drop-off/pick-up of household members. The empirical analysis indicates, for both stress measures, an asymmetry associated with vehicle transactions. Households increase their activity/travel stress far more by disposing of a vehicle, than they alleviate stress by purchasing a vehicle. A nested logit vehicle transaction model shows that both measures of stress are moderately significant influences on vehicle transactions.
An integrated model of vehicle transactions, activity scheduling and mode choice
Transportation Research Part B: Methodological ; 43 , 2 ; 217-229
2008-01-01
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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