Concerns about road safety are at the forefront of discussions given the recent legalization of cannabis in many areas. Some studies have demonstrated that the frequency of cannabis use is a significant predictor of risky driving among young drivers. However, it is difficult to isolate the specific contribution of substance use from the influence of certain individual personality traits such impulsivity. Indeed, impulsivity traits (i.e., positive urgency, negative urgency, lack of premeditation, lack of perseverance, sensation seeking) are also correlated with risky driving. The present study examined the effect of the frequency of cannabis use on risky driving while taking into account the effect of five impulsivity traits. A community sample of 209 young drivers (aged 17–25 years) completed self-report questionnaires about their road behaviors, their cannabis use, and their impulsivity traits. The results showed that the frequency of cannabis use was significantly associated with risky driving beyond the five impulsivity traits measured. Positive urgency was the only impulsivity trait that remained significantly associated with risky driving once all covariates were entered into the model. Moreover, the frequency of cannabis use acted as a mediator in the relationship between sensation seeking and risky driving.

鉴于最近在许多地区使大麻合法化，对道路安全的关注已成为讨论的重中之重。一些研究表明，使用大麻的频率是年轻驾驶员中危险驾驶的重要预测指标。但是，很难将物质使用的具体贡献与某些个人性格特征（如冲动性）的影响区分开来。确实，冲动性格（即积极的紧迫感，消极的紧迫感，缺乏深思熟虑，缺乏毅力，追求感觉）也与危险驾驶相关。本研究考察了使用大麻的频率对危险驾驶的影响，同时考虑了五个冲动性状的影响。社区样本包括209位年龄在17至25岁之间的年轻驾驶员，他们完成了有关其道路行为的自我报告调查表，他们的大麻使用及其冲动特质。结果表明，使用大麻的频率与所测得的五个冲动性状之外的危险驾驶行为显着相关。一旦将所有协变量输入模型，积极的紧迫感是唯一仍与危险驾驶显着相关的冲动性状。此外，大麻的使用频率在寻求感觉和冒险驾驶之间的关系中起着中介作用。