The aims of this study are to examine: 1) safety behaviours related to accidents among private (passenger car) and professional (HGV, bus) drivers in Norway and Greece, and 2) factors influencing these behaviours. Results indicate that safety behaviours related to accidents are more similar among private and professional drivers within the national samples, than across the national samples. Moreover, drivers’ safety behaviours are influenced by the behaviours that these groups ascribe to other drivers in their countries, indicating the existence of different national transport safety cultures, which may shed light on the different accident records in the two countries.