Marijuana is currently legal in 30 States and law enforcement has reported a sharp rise of drivers under the influence of marijuana. In a 2017 survey, Colorado Department of Transportation found that over 50% of the marijuana users reported consistently driving high in the past 30 days. Another study found that of people who are killed in car crashes and who were tested, 42% had impairing drugs in their system. This implies that driving under the influence of marijuana may