the aim of this study is to investigate the human driver behavior and explore a method to analyze the driver characteristics quantitatively. A self-reported survey of Chinese drivers based on Driver Behavior Questionnaire (DBQ) is carried out and the reliability of this questionnaire is validated. Based on Factor analysis theory, a two-dimension factor structure is established to describe the driver's conscious and unconscious behaviors. The quantified factors could represent the characteristics of driving skill and driving style respectively and the difference comparisons between driver groups divided by gender, age and driving experience are discussed.Index Terms-human driver characteristics, driver behavior questionnaire, factor analysis.

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