A dynamic analysis of household car ownership

Anne Nolan

Transportation Research Part A: Policy and Practice, 2010, vol. 44, issue 6, 446-455

Abstract: This paper examines the determinants of household car ownership, using Irish longitudinal data for the period 1995-2001. This was a period of rapid economic and social change in Ireland, with the proportion of households with one or more cars growing from 74.6% to 80.8%. Understanding the determinants of household car ownership, a key determinant of household travel behaviour more generally, is particularly important in the context of current policy developments which seek to encourage more sustainable means of travel. In this paper, we use longitudinal data to estimate dynamic models of household car ownership, controlling for unobserved heterogeneity and state dependence. We find income and previous car ownership to be the strongest determinants of differences in household car ownership, with the effect of permanent income having a stronger and more significant effect on the probability of household car ownership than current income. In addition, income elasticities differ by previous car ownership status, with income elasticities higher for those households with no car in the initial period. Other important influences include household composition (in particular, the presence of young children) and lifecycle effects, which create challenges for policymakers in seeking to change travel behaviour.

Keywords: Car; ownership; Panel; data; Random; effects; probit (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (75)

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