Traditional (or punitive) measures have commonly been used in Los Angeles County to deal with DUI offenders, although two rehabilitation alternatives -- the preconviction and postconviction drunk driving programs -are believed to be effective in modifying drinking driver behavior. Those failing to complete treatment programs successfully tended to be younger, better educated but with lower incomes, subject to longer jail sentences and higher fines, and with larger numbers of traffic offenses prior to the current arrest than those who successfully completed the programs. Recidivists tended to be driving with a revoked or suspended driver's license at the time of their arrest more often than nonrecidivists. Other findings are reported, including those from a literature review on drunk driving enforcement. Data tables are included.