First Conviction

Mandatory .08 Conviction

Mandatory with a BAC of at least .15

Mandatory with a higher BAC least .16

Mandatory with 2nd Conviction

Discretionary

Alaska
(1/09)

Alabama
(9/11)

Michigan (10/10) (.16+)

Georgia****
(5/99)

California (a)

Arizona
(9/07)

Delaware
(7/09)

Minnesota**
(7/11) (.16+)

Idaho
(10/00)

District of Columbia (c)

Arkansas
(4/09)

Florida
(10/08)

Nevada
(.18+)

Iowa
(7/10)

Indiana (a) 

California Pilot Program*
(7/10)

Maryland
(10/11)

New Hampshire
(7/07) (.16+)

Massachusetts
(1/06)

Kentucky (a) 

Colorado**
(1/09)

New Jersey
(1/10)

Montana
(5/09)

Maine (b) 

Connecticut
(1/12)

North Carolina
(12/07)

Ohio
(5/09)

Mississippi (b)

Hawaii
(1/11)

Oklahoma
(11/11)

Pennsylvania
(10/03)

North Dakota (b)

Illinois**
(1/09)

Tennessee
(1/11)

South Carolina (1/09)

Kansas
(7/11)

Texas****
(9/05)

 South Dakota (d)

Louisiana
(7/07)

West Virginia
(7/08)

Missouri
(10/13)

Wisconsin
(7/10)

Nebraska
(1/09)

Wyoming
(7/09)

New Mexico
(6/05)

New York
(8/10)

Oregon***
(1/08)

Utah
(7/09)

Virginia
(7/12)

Washington
(1/09)

(Month/Year listed note laws effective date)
* California’s pilot program covers the counties of Los Angeles, Alameda, Sacramento, and Tulare. These counties combined have a population of over 13 million.
**Interlocks are highly incentivized in that, if the offender chooses not to use the device, he or she has a year long license suspension
***Mandatory upon license reinstatement
****Mandatory as a condition of probation

(a) Judicial discretion for any offenders
(b) Judicial discretion for repeat offenders
(c) Any offender can choose to go on the interlock program
(d) Part of the 24/7 sobriety program