Investigation of declared and revealed driver behaviour using vehicle diagnostics. Thesis [in Greek] National Technical University of Athens, School of Civil Engineering, Department of Transportation Planning and Engineering.

The aim of this diploma thesis is the correlation of stated and revealed driver’s behaviour with the use of vehicle on-board diagnostics (OBD) data. On that purpose, a large data set from a driving behaviour experiment was exploited, which recorded abnormal behaviour of 17 drivers. These data concerned harsh acceleration and braking, average traffic speed and mileage travelled, which were recorded per second during a period of three months. Drivers' stated behaviour was investigated through a corresponding questionnaire. For the data analysis, a mathematical statistical model was developed using linear regression. The results demonstrated a strong correlation between harsh brakings and accelerations on one hand and the number of accidents, the annual income and the declared frequency of harsh braking on the other. (Author/publisher)