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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: Good Samaritan
  • Good Samaritan law enacted
  • No Good Samaritan law enacted

Fear of police involvement is the most common reason for not calling 911 during a medical emergency. In recognition of this fact, many states have enacted laws that exempt from arrest and prosecution any victim or “Good Samaritan” who renders aid in a drug or alcohol-related emergency. Commonly referred to as ‘Good Samaritan,’ ‘911 Lifeline,’ or ‘Medical Amnesty/Immunity,’ these laws seek to offer limited, situational immunity as an incentive for taking life-saving measures. The above map identifies Good Samaritan laws that are specific to alcohol or alcohol/drugs. It does not include Good Samaritan statutes that are exclusive to drugs. In the wake of the opioid epidemic, many state legislatures have added drug overdose provisions to existing Good Samaritan alcohol laws.

To learn more about Good Samaritan laws, refer to our policy position.

To submit a law update, please contact out Director of Traffic Safety at [email protected]



2016 Alcohol-Impaired Driving Fatality Data Montana National
Total Alcohol-Impaired Driving Fatalities 85 10,497
Percent of Alcohol-Impaired Driving Fatalities of Total Fatalities 44.7 28.0
Under 21 Alcohol-Impaired Driving Fatalities 8 1,031
Percent of Under 21 Alcohol-Impaired Driving Fatalities of Total Under 21 Fatalities 33.3 22.3
2016 Alcohol-Impaired Driving Fatalities per 100,000 Population
Alcohol-Impaired Driving Fatalities per 100K population 8.2 3.3
Under 21 Alcohol-Impaired Driving Fatalities per 100K population 3.0 1.2
2007-2016 % Change in Alcohol-Impaired Driving Fatalities per 100K Pop
10-year Change in Alcohol-Impaired Driving Fatalities per 100K pop -26.2 -24.7
10-year Change in Under 21 Alcohol-Impaired Driving Fatalities per 100K pop -44.7 -44.8
Percent of Alcohol-Impaired Driving Fatalities Involving high BAC drivers (.15+)*
BAC=.15+ 80.6 70.3
Percent of Drivers in Fatal Crashes Involving Repeat Offenders
BAC .08-.14 12.5 26.6
BAC .15+ 87.5 73.4
12-20 Year Old Alcohol Consumption (latest available)
Past Month Alcohol Consumption (2015-2016) 22.0 19.8
Binge Drinking in Past 30-days (2015-2016) 15.4 12.7
2016 Arrest Data
Under 18: Driving under the influence 42 5,135
Total: Driving under the influence 4,392 1,017,808
Under 18: Liquor laws 454 29,073
Total: Liquor laws 1,871 234,899
Under 18: Drunkenness 0 3,805
Total: Drunkenness 0 376,433

Alcohol-Impaired Driving Fatality Data Source: NHTSA/FARS, 10/17

*Among drivers with a known alcohol test result

Youth Consumption Data Source: SAMHSA, Office of Applied Studies, National Surveys on Drug Use and Health, 12/2017 (

Arrest Data Source: 2016 FBI Uniform Crime Report (Tables 18, 20 and 22)

**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 2016 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 2016 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.

We all can work to end impaired driving. Learn how here.

For a comprehensive report on 2017 (latest available) State of Drunk Driving Fatalities in America, click here.

State Law State Law Detail
24/7 Programs Statewide program
Administrative License Suspension/Revocation No ALS/ALR law
BAC Test Refusal Administrative penalties
Drug Evaluation and Classification Program 51-100 DREs
DUI Child Endangerment Laws Enhanced penalties
DUI Look-back Periods Lifetime
DUID Zero Tolerance and Per Se Laws Per se limit greater than zero for some drugs
Oral Fluids no law, no program
Enhanced Penalties for High-BAC 0.16
Felony DUI Fourth offense
Good Samaritan Good Samaritan law enacted
Habitual Offender Designation Habitual Offender Law Enacted
Marijuana Drug-Impaired Driving Laws THC per se (5 nanograms)
Open Container - Alcohol In compliance with Federal requirements
Sobriety Checkpoints Alternative to checkpoints
DUI Courts - Standalone 1-5 DUI Courts
DUI Courts - Hybrid 1-5 Hybrid Courts
Open Container - Marijuana No marijuana open container law
DUID Affirmative Defense No affirmative defense
Ignition Interlocks Discretionary
Top Detected Drug Category by State (2017) Cannabis