This thesis aims to investigate the impact of road safety culture into the probability of road crash involvement, focusing on traffic enforcement aspects. In order to achieve this, data from the “Safe Culture” research regarding private car and motorcycle drivers in Athens and Rhodes were exploited. Subsequently, the answers from questions that serve the purposes of this thesis were picked and classified, in order to develop binary logistic regression models. In particular, 5 total models were developed in an effort to find differentiations and common road safety culture elements between car drivers and motorcycle riders, but also drivers in Athens and drivers in Rhodes, in relation to road crash probability.  Results indicate that drivers probably understand the importance of more intensive traffic enforcement as a means of traffic accident reduction, the development of a common road safety culture in the island of Rhodes in contrast to that of Athens and, last but not least, the importance of factors such as driving frequency, age and experience, on traffic accident probability.