The countdown to the election is in its final days. On November 8, voters in California will have the opportunity to vote for the legalization of marijuana via a ballot measure entitled Proposition 64. Although small amounts of marijuana are already decriminalized in the state, half a million people have still been arrested for marijuana-related crimes since 2006.
In short, you can be arrested for DUI if you have smoked marijuana and drove a motor vehicle. This is true even if you have a valid medical marijuana identification card (MMIC). Under California law, it is illegal for anyone to drive while under the influence of any drugs, or a combination of drugs and alcohol. In practice, however, the government may have serious difficulties proving beyond a reasonable doubt that a driver who smoked marijuana was intoxicated.