The Enhanced Negligent Operator Treatment Evaluation System (ENOTES) provides periodic cost-effectiveness analyses of the California Negligent Operator Treatment System (NOTS). The evaluation system is based on a comparison of the driving records of negligent operators (drivers with multiple traffic conviction and/or crash points) who are randomly assigned to an intervention or to a no-contact delayed treatment comparison group. Three levels of progressively more severe negligent operator interventions were evaluated in this manner; the fourth-level intervention (the most severe) was evaluated indirectly by using data from the Level 3 intervention. Drivers at Levels 1 and 2 were eligible to receive the standard, non-alcohol letter or a letter based on the Transtheoretical Model (TTM) of behavior change. The results found NOTS to be effective in reducing subsequent total crashes and citations of treated drivers. Consistent with prior evaluations of NOTS, the largest effects were found for the probation and probation violator sanctions, and the smallest effects were associated with the Level 1 and 2 letters. Within Levels 1 and 2, the TTM letters were found to be more effective than the standard letters in reducing subsequent traffic crashes and convictions. A cost effectiveness analysis of NOTS provided positive estimates at all four levels. (Author/publisher)
Abstract