ABSTRACT
Introduction
Road accident statistics and studies on driving behaviour indicate that driving becomes increasingly risky with age (Catchpole et al., 2005; Cushman, 1996; Evans, 1991; Massie et al., 1995; Ota et al., 2004; Tefft, 2008). Thus, many older drivers modify or self-regulate their driving behaviour to reduce their cognitive overload and to minimize their risk of accidents. The engagement in self-imposed driving restrictions has been attributed to impaired health (Alvarez and Fierro, 2008; Donorfio et al., 2008; Lyman et al., 2001), poor vision (Ball et al., 1998; Lagland et al., 2004; McGwin et al., 2000), poor physical functioning (Lyman et al., 2001; Marottoli et al., 1993), and cognitive impairment (Edwards et al., 2010; Freund and szinovacz, 2002; stutts et al., 1998). These medical and functional impairments reduce older people's ability to drive. Research suggests that those who recognize their poor driving ability and who have a lower level of driving confidence are more likely to limit their driving (Baldock et al., 2006; Charlton et al., 2006; Rudman et al., 2006).
