Adolescents (aged 15-19) are involved in a high number of motor vehicle collisions (MVCs). MVCs are considered complex events that are influenced by personal characteristics and psychological functioning. We propose that adolescents' psychological functioning preceding road collisions could be associated with the accidents, which in turn could be similar to acting out caused by psychological discomfort. In this study, we want to verify whether the rates of MVCs among adolescents are associated with their emotional-behavioural functioning and low levels of family support. Specifically, the study aims to verify that adolescents involved in motorbike collisions show maladaptive emotional-behavioural functioning and difficulties in identifying and describing their own emotions. The sample was composed of N = 100 adolescents without a psychiatric diagnosis who attended an emergency department following a road accident. They filled out self-report questionnaires to assess their emotional-behavioural functioning , difficulties in identifying and describing their emotions (TAS-20, Toronto Alexithymia Scale) and perceived levels of family support (PFSE, Adolescents' Perceived Filial Self-efficacy). We divided the sample into three groups on the basis of the number of MVCs they had experienced. The results show that adolescents involved in more motorbike accidents presented with more maladaptive emotional-behavioural functioning and more difficulties in describing and identifying their emotions. Additionally, lower perceived family support predicted more maladaptive emotional-behavioural functioning (internalizing and externalizing difficulties) and difficulties in describing and identifying their emotions. We concluded that problematic psychological functioning (difficulties in identifying and describing their emotions) was associated with higher MVC rates in adolescents. Thus, MVCs among adolescents can be considered as a form of acting out caused by their own psychological state. Moreover, the level of family support, as perceived by adolescents, can be considered as a protective factor or as a risk factor for the development of adolescent disorders.