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Drug Impaired Driving Laws

While all states have drunk driving laws, only some have enacted laws to address drug impairment. This chart provides a broad outline of drug impaired driving laws throughout the U.S.

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.

State Per Se Laws for Drugs (Forbidding Prohibited Substances in Driver's Body) DEC/DRE Programs (Providing Law Enforcement Training)
Alabama   Yes
Alaska   Yes
Arizona Yes Yes
Arkansas   Yes
California   Yes
Colorado   Yes
Connecticut   Yes
Delaware Yes Yes
D.C.   Yes
Florida   Yes
Georgia Yes Yes
Hawaii   Yes
Idaho   Yes

Illinois Yes  
Indiana Yes Yes
Iowa Yes Yes
Kansas   Yes
Kentucky Yes Yes
Louisiana   Yes
Maine   Yes
Maryland   Yes
Massachusetts   Yes
Michigan Yes Yes
Minnesota Yes Yes
Mississippi Yes Yes
Missouri   Yes
Montana   Yes
Nebraska   Yes
Nevada Yes Yes
New Hampshire   Yes
New Jersey

  Yes
New Mexico   Yes
New York   Yes
North Carolina Yes Yes
North Dakota   Yes
Northern Mariana Islands   Yes

Ohio Yes

Yes
Oklahoma   Yes
Oregon   Yes
Pennsylvania Yes Yes
Rhode Island Yes Yes
South Carolina   Yes
South Dakota   Yes
Tennessee   Yes
Texas   Yes
Utah Yes Yes
Vermont   Yes
Virgin Islands    
Virginia Yes Yes
Washington Yes (for THC) Yes
West Virginia   Yes
Wisconsin Yes Yes
Wyoming   Yes
Total States 19 50 + D.C., Northern Mariana Islands

Source: State Highway Safety Offices.