a b s t r a c tThe number of car crashes has gradually reduced in the last decade across all European Countries, but the number of motorcycle crashes has remained nearly the same. In our research we investigate whether there are differences in attitudes towards road safety issues, driving behaviours in specific imagined situations, risk perception and risk concern, among young student drivers and riders. The study involved a large sample taken from across six European countries.The results reveal that although there are no differences between motorcyclists and car drivers in their attitudes toward road safety rules, differences do appear when the road rules compliance is assessed in specific imagined situations, with motorcyclists reporting to be more prone than car-drivers to violations of traffic rules. Moreover, despite the perceived risk during driving is the same for motorcyclists and car-drivers, differences do appear on their concern about this risk, with motorcyclists reporting to be less concerned than car-drivers about the risk of a road crash. This could lead to a high probability of risky driving behaviour in motorcyclists than in car-drivers. Present findings have important practical implications for road safety training courses. . Road crashes are indeed the major cause of death among young people, with the most vulnerable group being represented by people between 15 and 29 years. The second is that, despite the overall strong decrease in the number of road crashes, motorcyclists' fatalities decrease much more slowly. Actually, during the last decade (from 2006 to 2015), the European countries have seen a strong decrease of fatalities for traffic accident (À45% fatalities for drivers or passengers of cars and taxis; À57% fatalities for driver of heavy goods vehicles >3,5t; Source: CARE-EU road accidents database, 2017). For motorcyclists, the number of fatalities decreased by only 28%. Motorcycle and moped (together referred to as Powered Two Wheelers -PTW) road fatalities accounted for 18% of the total number of road crash fatalities occurred in 2015 in the EU-28 countries.Thus, the number of car crashes has been gradually decreasing in the last decade, whereas the number of PTW crashes has slightly increased.The reasons for such a discrepancy are still unclear; though, understanding this phenomenon is necessary for any crashes prevention programs to be effective. The purpose of the present study is to investigate whether a difference does exist in the general attitude toward road-safety issues between car-drivers and PTW riders that can account for the discrepancy in the number of road crashes between these two groups of road users. The study starts up within the European Commission's ICARUS project (Inter-Cultural Approaches for Road Users Safety) which focused on the behaviours of young drivers as well as on the main factors jeopardizing road safety.The high crash rates shown by PTW riders is generally considered a consequence of several factors, spanning from the higher vulnerability of motorcy...