GHSA Releases Guide for States as New Research Raises Concerns about Marijuana Legalization’s Impact on Traffic Safety
FOR IMMEDIATE RELEASE
October 18, 2018
CONTACT: Kara Macek, 202-789-0942 x140
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.
NOTE: GHSA does not compile any additional data on drug-impaired driving laws other than what is presented here. A compilation of state marijuana laws is available via the Insurance Institute for Highway Safety, and information on marijuana-impaired driving laws is available from the National Alliance to Stop Impaired Driving. For more information, consult the appropriate State Highway Safety Office (SHSO).
Source: SHSOs.
Last updated in January 2024. Laws last reviewed by SHSOs in March 2024.
Per se >0 for some drugs
Decriminalized and legal for recreational and medical use
THC per se (5 ng)
Per se >0 for some drugs
Decriminalized and legal for medical use
THC per se (2 ng)
Per se >0 for some drugs
Legal for medical use
THC per se (5 ng)
Permissible inference law >0 for THC
Decriminalized and legal for recreational and medical use
Permissible inference for THC (5 ng)
None
Decriminalized and legal for recreational and medical use
None
None
Decriminalized and legal for recreational and medical use
None
None
Decriminalized and legal for medical use
None
None
Legal for medical use
None
None
None
Decriminalized and legal for medical use
None
Decriminalized
None
None
None
Decriminalized and legal for medical use
None
Legal for medical use
Decriminalized
None
Decriminalized and legal for medical and recreational use
None
Decriminalized and legal for medical and recreational use
None
None
None
Decriminalized and legal for medical use
None
None
Decriminalized and legal for medical and recreational use
None
None
Decriminalized and legal for medical and recreational use
None
Zero tolerance for some drugs
Illegal
Zero tolerance for delta-9-THC
Zero tolerance for some drugs
Legal for medical use
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Illegal
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Decriminalized and legal for medical use
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Legal for medical use
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Legal for medical use
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Decriminalized
None
Zero tolerance for THC but no restriction on metabolites (effective 8/1/23)
Zero tolerance for some drugs
Decriminalized and legal for medical and recreational (effective 8/1/23) use
Zero tolerance for some drugs
Legal for medical and recreational use
Zero tolerance for THC
Zero tolerance for some drugs
Illegal
None
Zero tolerance for some drugs
Illegal
Zero tolerance for THC
Zero tolerance for some drugs
Illegal
Zero tolerance for THC and metabolites
Decriminalized and legal for recreational and medical use
THC per se (5 ng)
Zero tolerance for some drugs
Zero tolerance for some drugs
Illegal
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Decriminalized and legal for medical use
Zero tolerance for THC and metabolites
Zero tolerance for some drugs
Legal for medical use
Zero tolerance for THC and metabolites
None
Illegal
None
None
Illegal
None
None
Illegal
None
None
Decriminalized for legal for medical use
None
None
Decriminalized and legal for medical use
None
None
Illegal
None
None
Illegal
None
None
None
Legal for medical use
None
Legal for medical use
None
None
Illegal
None
None
Illegal
Decriminalized and legal for recreational and medical use
None
None
Per se >0 for some drugs
None
Decriminalized and legal for recreational and medical use
Decriminalized and legal for recreational and medical use
None
None
None
None
Legal for medical use
Decriminalized and legal for medical and recreational use
None
None
Per se >0 for some drugs
Decriminalized and legal for medical and recreational use
THC per se (2 ng) for felony violations
None
Decriminalized and legal for medical use
None
None
FOR IMMEDIATE RELEASE
October 18, 2018
CONTACT: Kara Macek, 202-789-0942 x140
As states consider changing their laws, it is important to take into account the traffic safety ramifications legalized marijuana may have. To help states understand these impacts, GHSA has compiled the most pertinent research into Traffic Safety Impacts of Marijuana Legalization, a succinct, four-page guide to the issue.
GHSA's Annual Report, Highlights of Association Activity, showcases the Association's accomplishments from the 2018 Fiscal Year (July 1, 2017 – June 30, 2018).
FOR IMMEDIATE RELEASE
June 12, 2018
Contact: Madison Forker, mforker@ghsa.org
202-789-0942 x120
Drugged driving is a growing issue nationally, and Wisconsin has seen its number of drug-related crash deaths double in the past decade. This article references GHSA's recent report on drug-impaired driving.
Story by Shamane Mills
June 4, 2018
FOR IMMEDIATE RELEASE
May 31, 2018
CONTACT: Kara Macek, kmacek@ghsa.org
202-789-0942 x140; 202-262-4889 (cell)
A new report from GHSA find that more than half of drug-positive fatally-injured drivers had marijuana, opioids, or both in their system. Report author Dr. Jim Hedlund discusses this finding.
Article by Scott Calvert
May 31, 2018