Applications of signal detection theory (SDT) in the study of road-users behavior were tested in both real and laboratory settings. The field study used a gap-acceptance task with 3 levels of experimentally produced frustration. The laboratory simulation used a parking task, again with 3 levels of frustration. In addition, a multidimensional analysis of driver's subjective road experience and behavior aided in the interpretation of one of the experimental measures. Successful applications of SDT techniques to the analysis of several traffic problems are demonstrated, and future applications are suggested.
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