Investigation of Defensive-Driving Assessment Questionnaire for General Drivers Based on Driving School Instructors' Knowhow of Driver-Diagnosis

Abstract

In the study, a multidimensional scale for defensive-driving assessment was developed based on the driving instructors' knowledge. Firstly, totally 272 assessment items were collected through interviewing with instructors and reviewing conventional scales assessing drivers' characteristics, and 38 items were nominated as the candidates of the new scale. Secondary, instructors tried to assess 469 drivers' driving with these items. As results, 4 assessment factors were abstracted through the factor analyses, and the Defensive-Driving Assessment Questionnaire (DDAQ) was constructed with 15 significant items. Finally, a statistical model of defensive-driving assessment was proposed and verified using the structural equation modeling.