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A comment on Can Sobriety Tests Weed Out Drivers Who've Smoked Too Much Weed?. Parent comment

Re:Can Sobriety Tests Weed Out Drivers Who've Smoked Too Muc... by DanBC on Thursday January 26, 2017 @09:31AM (#13491610)
We know that cannabis use prior to driving increases the risk of an accident.

Alcohol is probably worse.

Allowing people to research cannabis would let us know what the risk is.

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Re:Can Sobriety Tests Weed Out Drivers Who've Smoked Too Muc... by Neliquat on Thursday January 26, 2017 @09:58AM (#13491852)
How do we know that?

(I expect it is higher, but that seems hard to produce meaningful data. Self reported? Subject to a blood test? A piss test that detects 2 months use?)

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