It's easy to find out what the legal limit for alcohol is before you drive. Most states have set measures for driving under the influence of alcohol; it's .08 in Michigan. The influence of drugs on driving, however, can often be more confusing for drivers and law enforcement officers alike.
What narcotics are allowed in a person's system if he or she is driving?
The short answer is none. Michigan's zero-tolerance law for narcotic use while driving covers cocaine, heroin and marijuana. This does not change in theory with the legalization of recreational marijuana, but it may change in practice.
How do prosecutors treat cases of driving while under the influence of marijuana?
Approaches may vary by jurisdiction. For example, one may require evidence of a motor vehicle violation like leaving the proper lane to prosecute a high driver, but another may simply use evidence of tetrahydrocannabinol, the active ingredient in marijuana, in a driver's bloodstream.
Does the legalization of marijuana lead to more high driving arrests?
The process of legalization is still new, but early results indicate legalizing states see an increase in driving-related arrests. The state of Washington, one of the first states to legalize, also saw marijuana-related fatal crashes double, according to the American Automobile Association (AAA).
What should I do if I am arrested for driving high?
It is a good idea to use your right to legal representation. An attorney may have a better idea of the likelihood of prosecution for driving under the influence as well as various ways that charges may be dismissed by judges or dropped by prosecutors.