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運転能力に悪影響を与えることが学術的に証明されている

Cannabis Effects on Driving Skills
https://academic.oup.com/clinchem/article/59/3/478/5621997

Developing limits for driving under cannabis
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1360-0443.2007.02009.x

The Impact of Cannabis on Driving
https://link.springer.com/article/10.1007/BF03405376