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State Map

SELECT A STATE from the National Totals dropdown menu to view statistics about impaired driving and underage drinking.

SELECT A LAW to view the details of each state’s impaired driving and underage drinking laws.

See how your state measures up to the rest of the country!

State Law: Marijuana Drug-Impaired Driving Laws
  • Zero tolerance for THC only
  • Zero tolerance for THC and metabolites
  • Zero tolerance for THC and metabolites (applies only to drivers under age 21)
  • THC per se (1 nanogram)
  • THC per se (2 nanograms)
  • THC per se (5 nanograms)
  • Reasonable inference THC law (5 nanograms)
  • No marijuana-specific drugged driving law

*For states without a marijuana-specific per se drugged driving law, an impairment-based statute exists that requires law enforcement to prove impairment of the driver. Successful prosecution depends on documented behavioral evidence and recent drug use.

To submit a law update, please contact out Director of Traffic Safety at erin.holmes@responsibility.org

2015 Alcohol-Impaired Driving Fatality DataNational
Total Alcohol-Impaired Driving Fatalities10,265
Percent of Alcohol-Impaired Driving Fatalities of Total Fatalities29.3
Under 21 Alcohol-Impaired Driving Fatalities1,021
Percent of Under 21 Alcohol-Impaired Driving Fatalities of Total Under 21 Fatalities23.0
2015 Alcohol-Impaired Driving Fatalities per 100,000 Population
Alcohol-Impaired Driving Fatalities per 100K population3.2
Under 21 Alcohol-Impaired Driving Fatalities per 100K population1.2
2006-2015 % Change in Alcohol-Impaired Driving Fatalities per 100K Pop
10-year Change in Alcohol-Impaired Driving Fatalities per 100K pop-29.0
10-year Change in Under 21 Alcohol-Impaired Driving Fatalities per 100K pop-49.7
Percent of Alcohol-Impaired Driving Fatalities Involving high BAC drivers (.15+)*
BAC=.15+69.2
Percent of Drivers in Fatal Crashes Involving Repeat Offenders
BAC .08-.1427.0
BAC .15+73.0
2013 and 2014 12-20 Year Old Alcohol Consumption (latest available)
Past Month Alcohol Consumption22.8
Binge Drinking in Past 30-days14.0
2015 Arrest Data
Under 18: Driving under the influence5,064
Total: Driving under the influence833,833
Under 18: Liquor laws33,155
Total: Liquor laws204,665
Under 18: Drunkenness4,243
Total: Drunkenness314,856

Alcohol-Impaired Driving Fatality Data Source: NHTSA/FARS, 10/16

*Among drivers with a known alcohol test result

*Youth Consumption Data Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 12/15, (http://www.samhsa.gov/data/population-data-nsduh)

*Arrest Data Source: 2015 FBI Uniform Crime Report (Tables 38 and 69)

**Drunkenness is not considered a crime in some states; therefore, the figures may vary widely from state to state

*Limited, incomplete, or no data were reported by the District of Columbia, Florida, Illinois, and New York in the 2015 Uniform Crime Report. Data should be used with caution and should not be compared to other states or previous year data.

Note: Because the number of agencies submitting arrest data varies from year to year, users are cautioned about making direct comparisons between 2015 arrest totals and those published in previous years’ editions of Crime in the United States. Further, arrest figures may vary widely from state to state because some Part II crimes of the Uniform Crime Report are not considered crimes in some states.

For a comprehensive report on the 2016 State of Drunk Driving Fatalities in America, click here.

StateState Law
AlabamaNo marijuana-specific drugged driving law
AlaskaNo marijuana-specific drugged driving law
ArizonaZero tolerance for THC and metabolites
ArkansasNo marijuana-specific drugged driving law
CaliforniaNo marijuana-specific drugged driving law
ColoradoReasonable inference THC law (5 nanograms)
ConnecticutNo marijuana-specific drugged driving law
DelawareZero tolerance for THC and metabolites
District of ColumbiaNo marijuana-specific drugged driving law
FloridaNo marijuana-specific drugged driving law
GeorgiaZero tolerance for THC and metabolites
HawaiiNo marijuana-specific drugged driving law
IdahoNo marijuana-specific drugged driving law
IllinoisTHC per se (5 nanograms)
IndianaZero tolerance for THC and metabolites
IowaZero tolerance for THC only
KansasNo marijuana-specific drugged driving law
KentuckyNo marijuana-specific drugged driving law
LouisianaNo marijuana-specific drugged driving law
MaineNo marijuana-specific drugged driving law
MarylandNo marijuana-specific drugged driving law
MassachusettsNo marijuana-specific drugged driving law
MichiganZero tolerance for THC only
MinnesotaNo marijuana-specific drugged driving law
MississippiNo marijuana-specific drugged driving law
MissouriNo marijuana-specific drugged driving law
MontanaTHC per se (5 nanograms)
NebraskaNo marijuana-specific drugged driving law
NevadaTHC per se (2 nanograms)
New HampshireNo marijuana-specific drugged driving law
New JerseyNo marijuana-specific drugged driving law
New MexicoNo marijuana-specific drugged driving law
New YorkNo marijuana-specific drugged driving law
North CarolinaNo marijuana-specific drugged driving law
North DakotaNo marijuana-specific drugged driving law
OhioTHC per se (2 nanograms)
OklahomaZero tolerance for THC and metabolites
OregonNo marijuana-specific drugged driving law
PennsylvaniaTHC per se (1 nanogram)
Rhode IslandZero tolerance for THC and metabolites
South CarolinaNo marijuana-specific drugged driving law
South DakotaZero tolerance for THC and metabolites (applies only to drivers under age 21)
TennesseeNo marijuana-specific drugged driving law
TexasNo marijuana-specific drugged driving law
UtahZero tolerance for THC and metabolites
VermontNo marijuana-specific drugged driving law
VirginiaNo marijuana-specific drugged driving law
WashingtonTHC per se (5 nanograms)
West VirginiaNo marijuana-specific drugged driving law
WisconsinZero tolerance for THC only
WyomingNo marijuana-specific drugged driving law