United States Department of Transportation
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An Assessment of Traffic Safety Culture Related to Driving after Cannabis Use [Project Summary Report]
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2016-12-01
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[PDF-339.17 KB]
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Abstract:Several states have legalized recreational cannabis use, and more are considering legalization. Increased use of cannabis among drivers may pose a barrier to achieving the National Toward Zero Deaths (TZD) initiative. The transformation of traffic safety culture is a primary element of the TZD strategy. A positive safety culture can significantly reduce crash fatalities and serious injuries. This research focuses on specific aspects of traffic safety culture that relate to the decision to drive after consuming cannabis. Research shows that cannabis is the most commonly used illicit drug in the United States and due to recent legalization trends, use is increasing.
Increased use of cannabis may lead to more incidents of driving after using cannabis. This research project was a formative study to better understand which specific aspects of traffic safety culture (the values and beliefs shared among groups of road users and stakeholders that influence their decisions to behave or act in ways that affect traffic safety) predict the decision to drive after using cannabis. The research sought to answer four critical research questions: 1. How does traffic safety culture compare between users and non-users of cannabis? 2. How does traffic safety culture correlate with the decision to drive under the influence of cannabis? 3. How does traffic safety culture compare between states with and without legalized recreational use laws? 4. How does traffic safety culture compare between states with and without legalized medical use laws?
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