DUID Zero Tolerance or Per se Laws for Some Drugs
- Zero tolerance for some drugs
- Possession and Use: Legal for medical use
- Impaired Driving: THC per se (1 ng)
Every state has laws dealing with alcohol-impaired driving and drug-impaired driving. But unlike the laws for drunk driving, those that address drugged driving are nuanced, difficult to enforce and prosecute and vary substantially by state.
In addition to general impairment laws, there are two basic laws that states tend to use when addressing drug-impaired driving:
18 states have zero tolerance or non-zero per se laws for marijuana.
A PDF list of state marijuana-related laws is also available here.
NOTE: GHSA does not compile any additional data on drug impaired driving laws other than what is presented here. For more information, consult the appropriate State Highway Safety Office.
Sources: State Highway Safety Offices.