Colorado is reminding residents that while natural psychedelics like psilocybin mushrooms are now decriminalized for certain uses under the state’s groundbreaking Natural Medicine Health Act (Proposition 122), driving under the influence of psychedelics remains strictly illegal. The state’s Department of Transportation (CDOT) and law enforcement agencies have launched new awareness efforts to clarify the law, citing growing public confusion as regulated access to psilocybin expands.
In 2022, Colorado voters approved Proposition 122, which decriminalized personal possession and use of certain natural psychedelics, including psilocybin, psilocin, mescaline (not peyote), DMT, and ibogaine. The measure also created a regulated framework for licensed psychedelic-assisted therapy, now being rolled out across the state.
But state officials are emphasizing that decriminalization does not mean legalization in all contexts. Just as cannabis legalization did not allow for driving while high, psychedelics are subject to the same DUI laws. Any detectable impairment behind the wheel can result in criminal charges, license suspension, and fines.
“We want Coloradans to understand the law clearly — you can’t trip and drive,” said a CDOT spokesperson. “Even if psilocybin is no longer criminal to possess, operating a vehicle while impaired endangers everyone and carries serious penalties.”
Colorado’s clarification comes at a pivotal time. In late 2024, the first licensed psilocybin treatment centers began opening, and 2025 is expected to see rapid growth in therapeutic programs. With more residents accessing psychedelics legally in clinical or ceremonial contexts, the state anticipates a rise in recreational curiosity as well.
Officials fear that, without clear messaging, some people will assume psychedelics are treated like alcohol — legal to consume, but only illegal to drive if above a set “limit.” Unlike alcohol, however, there is no defined blood concentration threshold for psilocybin impairment. Any observed impairment can trigger arrest, leaving law enforcement officers to rely on behavioral assessments rather than chemical tests.
This legal clarification has ripple effects across public health, law enforcement, and the broader psychedelics movement:
Colorado is one of two U.S. states — along with Oregon — to implement legal frameworks for natural psychedelics. Both states have emphasized that decriminalization stops short of permitting impaired driving. Other jurisdictions, including California and Washington, are watching closely as they consider psychedelic reforms.
Federal law still classifies psilocybin as a Schedule I controlled substance, though the FDA has designated psilocybin-assisted therapy as a “breakthrough treatment” for depression. This patchwork legal environment makes state-level guidance crucial.
Colorado’s next steps are expected to include:
Advocates argue that while enforcement is necessary, education should be prioritized. “The vast majority of psychedelic use is intentional and safe,” said one harm reduction expert. “We don’t want sensationalized DUI cases to derail a movement that’s bringing real healing to people.”
