Abstract
In a household with fewer vehicles than household members, the use of a household vehicle by one member decreases its availability for other members. A model of mode choices by household members is developed as a vehicle allocation model in this study while taking into account the exclusiveness in vehicle use. A two-level nested logit model is applied where the choice by the main driver of a household vehicle is placed at a higher level and the allocation of the vehicle to other members in a lower level. The scale parameter is structured to represent the heterogeneity across households. The results of empirical analysis suggest that some improvement of the model's goodness-of-fit is gained by considering the exclusiveness in vehicle use, and that the main drivers who are household heads or drive standard-size vehicles are less altruistic.
