Medical marijuana use and driving could mean a DUI
Medical-marijuana cardholders in Arizona who drive after using the drug may face a difficult legal choice: their driver's license or their marijuana card. If they use both, they could be charged with DUI.
Court ruling upholds DUI test for marijuana
Motorists in Arizona can continue to be prosecuted for driving under the influence of marijuana even if the only proof is a blood test that shows a chemical compound that doesn't cause impairment but can remain in the blood for a month, a state appellate court has ruled.