A recent ruling could mean that a motorist who last smoked Marijuana in a legal state a month prior to traveling to Arizona, may be arrested and prosecuted for Marijuana DUI.
An Arizona Court of Appeals marijuana DUI dismissal was overturned recently in favor of the prosecution, and returned the case to the Superior Court for continued prosecution proceedings.
The issue in question was whether or not a motorist could be prosecuted for driving under the influence of Marijuana, even if the only evidence was blood test results that revealed a chemical compound that does not cause impairment; but can remain in the blood stream for a month.