ABSTRACT. Objective: This study examined associations between frequency of driving while intoxicated (DWI) at baseline and obtaining alcohol-related help at follow-up, and between obtaining help and subsequent reductions in DWI. It also examined improvements on personal functioning and life context indices as mediators between obtaining help and reduced occurrences of DWI. Method: A total of 628 individuals who were initially untreated for alcohol use problems completed a baseline inventory; follow-ups were 1, 3, and 16 years later. Results: More extended participation in outpatient treatment and Alcoholics Anonymous (AA) during Year 1 was associated with a lower likelihood of DWI at the 1-year follow-up. More extended participation in AA through Year 3 was associated with a lower likelihood of DWI at the 16-year follow-up. Improvement on personal functioning and life context indices was associated with reduced risk of subsequent occurrences of DWI. Decreases in drinking-related problems, impulsivity, and drinking to reduce tension mediated associations between more AA participation and reductions in DWI at 1 year. Conclusions: Among initially untreated individuals, sustained mutual help may be associated with a reduced number of occurrences of DWI via fewer drinking consequences and improved psychological functioning and coping. Treatment providers should attend to these concomitants of DWI and consider actively referring individuals to AA to ensure ongoing AA affi liation. The majority of studies of DWI have focused on community samples or samples of people arrested and convicted for DWI who were mandated to treatment. In contrast, we examined DWI in a sample of individuals who, at entry into the study, had initiated help seeking but were untreated for alcohol use problems; these individuals were followed for 16 years. Compared with non-help-seeking community samples, these help seekers likely have more severe alcohol-related dysfunction (George and Tucker, 1996;Tucker, 1995) but also more recognition of their alcohol misuse, motivation to change, and commitment to abstinence (Timko et al., 1994). However, compared with individuals reporting previous treatment for alcohol use disorders, these individuals likely have less severe alcohol-related dysfunction but also less motivation to change and commitment to abstinence (LoCastro et al., 2008). Thus, in the context of previous studies of DWI, we examined a sample that, by virtue of seeking help for the fi rst time, was unique in terms of severity of alcoholrelated disorder and motivation to change.To examine the behavior of DWI, this study used the conceptual framework developed by Moos and colleagues (Moos and Finney, 1983;Moos et al., 1990b) and adopted by other investigators (e.g., Buri et al., 2007) to examine the context of alcohol-related outcomes (Figure 1). The framework suggests that there is an association between (a) the individual's functioning and life context (e.g., severity of alcohol misuse, psychological symptoms, negative life events, social su...