The present study explored cognitive processes in judgments of drunkenness relative to legally allowable blood alcohol levels for driving. Judgments were based on the manipulation of three cues in hypothetical scenarios in a 3 X 4 X 3 factorial design (Type of Drink X Number of Drinks X Time to Consume). In addition, personality and behavioral characteristics influencing the accuracy of judgments of drunkenness relative to true blood alcohol levels were examined. Results indicated the presence of several misperceptions and inappropriate response tendencies that potentially can be modified with educational efforts.