Question for those of you living in a country where marijuana is legal. What are the positive sides, what are the negatives?
If you could go back in time, would you vote for legalising again? Does it affect the country’s illegal drug business , more/less?
BAC is also well correlated with impairment. Obviously it varies from one individual to another, but it is related strongly related enough to have fair and consistent enforcement.
AFAIK, blood tests that measure the presence of marijuana are relatively cheap, but measuring the concentration is slightly more difficult and is not well correlated with impairment. That means enforcement is problematic and subjective.