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traffic accidents

CognitionJune 6, 2026

Seasonal Circadian Disruption May Increase Driver Drowsiness and Crash Risk

TL;DR: A 2026 scoping review in Sleep Science linked seasonal timing, daylight exposure, daylight saving time (DST), sleep-wake rhythm disruption, and driver drowsiness to traffic-crash risk, but found that few studies directly integrate seasonality with chron…

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Drugs & MedicationsSeptember 30, 2023

Marijuana (Cannabis) & Traffic Accidents: Driving High Increases

A new Canadian study found that emergency room visits for car accidents involving marijuana (cannabis) use have increased significantly since recreational cannabis was legalized in 2018. The study raises concerns about the impacts of legalization and the comme…

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Seasonal Circadian Disruption May Increase Driver Drowsiness and Crash Risk

Marijuana (Cannabis) & Traffic Accidents: Driving High Increases

The findings. The context. The caveats.