The present study aimed to the identification of the parameters affecting the intention of drivers to pay so as to avoid getting involved in fatal accidents and the estimation of human costin car accidents. The “Stated Preference Method” was used along with a questionnaire-based survey. The statistical analysis followed, with the development of a Lognormal Regression model. The final form of the model allowed the identification and the quantification of the factors of the individual willingness to pay. The use of data based on the “Willingness-to-Pay” methodology hasled to the estimation of the human cost of an accident, for the first time in Greece, totaling to 866,6 thousand euros (2001 prices).