Does Marijuana / Cannabis Impair Driving Ability?
OPINION: The laws today typically define "drunk driving" as "driving under the influence of alcohol and/or drugs", with marijuana included in the meaning of "drugs". In most states, the very presence of marijuana in a driver's blood is either illegal in itself or presumptive of impaired driving. The prevailing view for years has been that cannabis, like alcohol, impairs the coordination, reflexes, perception and judgment necessary for the safe operation of a vehicle.


