This Diploma Thesis investigates changes in the behavior of Greek drivers, towards the probability of accident involvement. The research is based on the data of the pan-European SARTRE survey, which was conducted on a representative sample of Greek drivers in 1996 and 2002. The analysis of the drivers’ behavior was carried out by the use of discriminant and factor analysis, as well as statistical comparison techniques. Analysis results demonstrate significant changes in the Greek drivers’ behavior, in relation to accident involvement probability. Steep increase of police enforcement and traffic conditions changes (steep increase of vehicle ownership) resulted in improved driver behavior towards speeding, drink & drive and aggressive driving, but also to the increase of risk that Greek drivers are disposed to take.