A paper titled “Safety Culture among Private and Professional Drivers in Norway and Greece: Examining the Influence of National Road Safety Culture” authored by Tor-Olav Nævestad, Alexandra Laiou, Ross O. Phillips, Torkel Bjørnskau and George Yannis is now published in Safety Journal. This study investigates road safety culture (RSC) as an explanation for this discrepancy by: (1) Comparing the road safety behaviours among professional and private drivers in Norway and Greece, (2) Examining factors influencing road safety behaviours, focusing especially on national road safety culture, and (3) Examining the influence of road safety behaviours and other factors (e.g., demographic and work-related variables) on accident involvement. The results indicate that aggressive violations are more similar among private and professional drivers within the national samples, than across the national samples, while seat belt use seems to vary according to the professional versus private dimension.