A copula-based joint multinomial discrete–continuous model of vehicle type choice and miles of travel

Abstract

In this paper, a joint model of vehicle type choice and utilization is formulated and estimated on a data set of vehicles drawn from the 2000 San Francisco Bay Area Travel Survey. The joint discrete-continuous model system formulated in this study explicitly accounts for common unobserved factors that may affect the choice and utilization of a certain vehicle type (i.e., self-selection effects). A new copula-based methodology is adopted to facilitate model estimation without imposing restrictive distribution assumptions on the dependency structures between the errors in the discrete and continuous choice components. The copula-based methodology is found to provide statistically superior goodness-of-fit when compared with previous estimation approaches for joint discrete-continuous model systems. The model system, when applied to simulate the impacts of a doubling in fuel price, shows that individuals are more likely to shift vehicle type choices than vehicle usage patterns.

A joint flexible econometric model system of household residential location and vehicle fleet composition/usage choices

“…But these models often treat residential location choice variables (land use measures) as exogenous variables that influence vehicle fleet ownership and usage (e.g., Shay and Khattak, 2005;). Further, many of these earlier studies consider the jointness in vehicle type choice and usage for the most recent vehicle or most driven by the household (for example, see Choo and Mokhtarian, 2004, Spissu et al, 2009, and Mohammadian and Miller, 2003, or confine their attention to households with two or fewer vehicles (see West, 2004). Overall, there has been relatively little research on treating residential choice as being endogenous in vehicle type and usage decisions, or on examining the entire vehicle fleet composition and usage characteristics of households.…”

Review of Discrete-continuous Models in Energy and Transportation

“…Spissu et al [12] presented a model in which they first presented the vehicle type choice component, and then the vehicle mileage component, and finally they described a joint structure between these two components. Here, their model as one of the recent studies will be reviewed.…”

“…Then Spissu et al [12] have followed Lee [13] to build a polychotomous discrete choice in a form of a series of binary discrete choice for every vehicle type. To do it they assumed R qi as a dichotomous variable with 1 for chosen vehicle type and 0 for otherwise.…”

A Review on Discrete-Continuous Models

“…Kim et al 19) は居住地選択と活動種類選択-活動時間長の依存関 係の記述をそれぞれ試みている．また，Bhat and Eluru 27) は居住地選択と走行距離の関係性を，Spissu et al 64 …”