We found that among young recreational cannabis users, a regular dose of cannabis had no effect on simple and learned tasks, but its use led to significant impairments on complex and novel driving-related tasks, as well as perceived driving ability and safety, for up to 5 hours after use. The present finding that the first 5 hours after cannabis use affected driving-related performance substantiates the recommendations of Canada’s Lower-Risk Cannabis Use Guidelines, which recommend waiting 6 hours after cannabis use before driving.30 [7]
Links
[1] http://cmajopen.ca/content/6/4/E453.full.pdf+html
[2] http://rethinkpot.org/tags/canada
[3] http://rethinkpot.org/tags/research
[4] http://rethinkpot.org/tags/study-0
[5] http://rethinkpot.org/tags/driving
[6] http://rethinkpot.org/tags/youth
[7] http://cmajopen.ca/content/6/4/E453.full#ref-30