DUI charges aren't limited to alcohol. Driving under the influence of drugs — including legal marijuana and prescription medications — carries similar or identical penalties.
Drug DUI vs Alcohol DUI
While the charges are similar, drug DUI cases differ in testing methods and defense strategies. There's no universally agreed-upon impairment threshold for drugs like the 0.08% BAC for alcohol.
Marijuana DUI
Even in states where marijuana is legal, driving while impaired by cannabis is illegal. Some states set per se THC limits (Colorado: 5 ng/mL, Washington: 5 ng/mL), while others require proof of impairment.
Testing Methods
Drug DUI cases rely on blood tests, Drug Recognition Expert (DRE) evaluations, and urine tests. THC can remain detectable long after impairment has worn off, creating defense opportunities.
Prescription Drug DUI
You can be charged with DUI for driving while impaired by legally prescribed medications, including opioids, benzodiazepines, sleep aids, and muscle relaxers.