“…The PPMHP domains address safety influences on the level of the driver (e.g., knowledge, behavior, attitudes, health status; Awadzi et al, 2008; Classen et al, 2006, 2007), the vehicle (e.g., safety features or equipment; Awadzi et al, 2008; Classen et al, 2007), the physical and political environment (e.g., daytime conditions, state licensing policies; Awadzi et al, 2008; Classen et al, 2007), the social environment (e.g., driving laws, assistance with transportation; Classen, Winter, & Lopez, 2009), and person–vehicle–environment interactions (Classen, Awadzi, & Mkanta, 2008). Collectively, our research has demonstrated that behavioral and environmental factors are understudied yet important determinants for older driver safety and that a comprehensive assessment must include person, vehicle, and environmental factors, as well as the interactions among these factors (Classen et al, 2007, 2008).…”