Abstract
Defining a “user driver″ is one of the important activities for designing driver support systems and its interface. To make a user profile efficiently and appropriately, the questionnaires that characterize drivers by their attitude and workload consciousness were translated into the local language and were evaluated primarily. Next, field study that has three stratified investigation, such as questionnaire, interview and observation was conducted. In the fieldwork, a distinctive driving posture was observed. And then, three user profile examples characterized by sitting posture were shown. As a result, the validity and the effectiveness of study procedure are verified.
