SynthesisFrontiers in psychiatry2021
Cannabis Use and Car Crashes: A Review.
Synthesis in Frontiers in psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
37 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Impact of Untreated Attention-Deficit/Hyperactivity Disorder on Motor Vehicle Accidents: A Systematic Review and Meta-Analysis.Advances in therapy · 2026Pooled it
- Potency-related effects of smoked cannabis on simulated driving performance: a randomized, controlled crossover trial.Scientific reports · 2026Trial
- Change of substance-related hospitalisation in adolescents after cannabis legalisation in Thailand in 2022.Addiction (Abingdon, England) · 2026Article
- Physical Performance Impairment with Cannabis Consumption in Adults Over 12 Hours.Journal of drug education · 2026Article
- Mobile intervention for emerging adults with regular cannabis use: a micro-randomized trial.Lancet regional health. Americas · 2026Article
- Brain reward function in people with moderate-to-severe cannabis use disorder who tried to cut down or quit: an fMRI study.Scientific reports · 2026Article
- Medical Cannabis Legalization and its Association with Cannabis use, Cannabis use Disorder, and Intoxicated Driving: Findings from the National Survey on Drug use and Health, 2016-2019.Community mental health journal · 2026Article
- Driving by frequent cannabis users 'the morning after' last use of smoked cannabis: an observational driving simulator study.Journal of cannabis research · 2026Article
- Recent Advances in the Science of Cannabis-Impaired Driving.Current addiction reports · 2026Review
- Per Se Driving Under the Influence of Cannabis Statutes and Blood Delta-9-Tetrahydrocannabinol Concentrations following Short-Term Cannabis Abstinence.Clinical chemistry · 2025Article
- An Open-Road Driving Performance Task to Examine Long-Term Medical Marijuana Use and Prescription Opioid Positivity Among Adults Aged 50 Years and Older: Protocol for an Observational Trial.JMIR research protocols · 2025Article
- Cannabis in road traffic - a retrospective analysis to identify possible cut-off-values.Forensic science, medicine, and pathology · 2025Article
- Cannabis Enforcement Lags Behind Alcohol: A National Study of Law Enforcement Practices in Legal and Nonlegal States.Journal of studies on alcohol and drugs · 2025Article
- Mapping Colombians' positions on national policies to control tobacco and marijuana consumption: a pilot study.Substance abuse treatment, prevention, and policy · 2025Article
- Cannabis use and cannabis use disorders and their treatment in the Europe.European archives of psychiatry and clinical neuroscience · 2025Review
- Cannabis, cannabinoids and health: a review of evidence on risks and medical benefits.European archives of psychiatry and clinical neuroscience · 2025Review
- Impact of Early-Life Adversity on Cannabis Use: Exploring the Mediating and Moderating Effects of Chronic Pain.Cannabis and cannabinoid research · 2025Article
- Drug use among individuals injured in non-fatal motor vehicle crashes and related policies in 2023.Traffic injury prevention · 2025Article
- Cannabis use patterns and different phenotypes in relation to other drugs use: latent class analyses from the Sao Paulo Megacity Mental Health Survey.Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) · 2025Article
- Recent advances in the development of portable technologies and commercial products to detect ΔJournal of cannabis research · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this review, state-of-the-art evidence on the relationship between cannabis use, traffic crash risks, and driving safety were analyzed. Systematic reviews, meta-analyses, and other relevant papers published within the last decade were systematically searched and synthesized. Findings show that meta-analyses and culpability studies consistently indicate a slightly but significantly increased risk of crashes after acute cannabis use. These risks vary across included study type, crash severity, and method of substance application and measurement. Some studies show a significant correlation between high THC blood concentrations and car crash risk. Most studies do not support this relationship at lower THC concentrations. However, no scientifically supported clear cut-off concentration can be derived from these results. Further research is needed to determine dose-response effects on driving skills combined with measures of neuropsychological functioning related to driving skills and crash risk.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.