Risky driving was conceptualized both as antecedent behaviors such as aggressive driving and non-use of seatbelts and consequences such as accidents and driver's license suspensions. The sample had an average age of 35 and was 91 percent male. Canonical correlations computed between each component of Jessor's model and the antecedent measures of risky driving indicated that risky driving could be predicted from the PBT model and was part of a behavior system. In addition, regression analysis indicated that the behavior system was more closely tied to driving risk than were personality or perceived environment. Results support Jessor's proposal that risky driving is part of a problem behavior syndrome and that his behavior syndrome is influenced by both personality and the perceived environment. Figure, tables, 23 references, and appended methodological information. (Author abstract modified)