Aggressive Driving Behaviours in Cannabis Users. The Influence of Consumer Characteristics Ortiz-Peregrina, Sonia Ortiz Herrera, Carolina González Anera, María Del Rosario Aggressive driving Risk Driving safety Cannabis THC DUIC Visual quality Visual fitness-to-drive DDDI This study analysed dangerous driving behaviours in twenty young occasional cannabis users through objective and self-reported data, studying the relationship between the two aspects. Visual function was assessed in a baseline session and after smoking cannabis, as well as speed-related behaviour in a driving simulator. The participants responded to questionnaires on sociodemographic factors, their consumption profile, and the incidence of dangerous behaviours (Dula Dangerous Driving Index; DDDI). After cannabis use, the results revealed a significant deterioration in visual function. In terms of speed management, they showed significantly greater acceleration force in the two different sections of the route, and they drove significantly faster. Our correlations indicate that males and heavier users display more risky speed management. Likewise, the heavier cannabis users admitted to increased dangerous driving behaviour, and an accident in the preceding year was associated with a trend towards aggressive driving behaviour according to the DDDI questionnaire. The findings of this study suggest that cannabis users adopt dangerous behaviours when driving, despite the effect this drug has on certain important functions, such as vision. The results suggest a need for awareness-raising and information campaigns. 2021-05-25T07:35:54Z 2021-05-25T07:35:54Z 2021 info:eu-repo/semantics/article Ortiz-Peregrina, S.; Ortiz, C.; Anera, R.G. Aggressive Driving Behaviours in Cannabis Users. The Influence of Consumer Characteristics. Int. J. Environ. Res. Public Health 2021, 18, 3911. https://doi.org/10.3390/ ijerph18083911 http://hdl.handle.net/10481/68698 10.3390/ijerph18083911 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI