A study identified distinct subgroups of cannabis users based on how they assess impairment risk, monitor their use, and plan safe transportation, revealing heterogeneity in self-regulation behaviors.
traffic safety researchers, cannabis policy designers, impaired driving prevention specialists
What the researchers found
Cannabis users showed substantial heterogeneity in self-regulation processes related to driving. Subgroups differed in how they perceived risks, monitored their impairment, and planned to avoid driving under the influence. These patterns varied by user characteristics and use contexts.
Why it matters
One-size-fits-all approaches to cannabis-impaired driving may be ineffective because users vary dramatically in their self-regulation behaviors. Targeted interventions could address specific deficits in risk assessment or planning.
The numbers in context
Multiple user subgroups identified. Three self-regulation domains assessed: risk perception, impairment monitoring, safe transportation planning. Substantial heterogeneity across users.
How the study worked
Survey-based study identifying subgroups of current and past cannabis users based on three self-regulation domains: risk perception, impairment monitoring, and safe transportation planning. Latent class or cluster analysis identified distinct user profiles.
What this study cannot tell us
Self-reported risk assessment and planning behaviors. Cross-sectional design. Cannot verify actual driving behavior. May not capture all relevant self-regulation processes. Social desirability bias possible.
How to read the evidence
Survey-based identification of user subgroups provides moderate evidence on self-regulation patterns.
When this study was published
Recent survey of cannabis users' self-regulation behaviors.
The bigger picture
Most impaired driving interventions assume uniform behavior among cannabis users. This study's identification of distinct self-regulation profiles suggests that prevention messaging and policy should be tailored to different user types.
Questions still open
- Which self-regulation subgroup is at highest risk for actual impaired driving?
- Can interventions improve self-regulation in the lowest-performing subgroups?
Common questions
Do all cannabis users drive impaired?
How do cannabis users decide if they're too impaired to drive?
Read the original research
Evaluating risks, monitoring cannabis use, and planning to get home safely: Exploring self-regulation processes associated with cannabis use and driving.
Traffic injury prevention, 26(3), 263-272
Citation
Sukhawathanakul, Paweena; Li, Jie; Contreras, Alejandra; Geddes, Otis; Maillet, Myles. (2025). Evaluating risks, monitoring cannabis use, and planning to get home safely: Exploring self-regulation processes associated with cannabis use and driving.. Traffic injury prevention, 26(3), 263-272. https://doi.org/10.1080/15389588.2024.2413442
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