Status of State Ignition Interlock Laws


First Conviction

   

Mandatory with a BAC of .08
or greater

Mandatory with a BAC of .15
or greater

Mandatory with 2nd Conviction

Discretionary

Alabama
(7/14)

Florida
(10/08)

Georgia
(5/99)

California
for any offender

Alaska
(1/09)

Iowa**
.10 BAC
(7/95)

Idaho
(10/00)

North Dakota 
for any offender

Arizona
(9/07)

Kentucky
(6/15)  

Indiana
(1/15)

South Dakota

part of the 24/7 program

 

Arkansas
(4/09)

Michigan
.17 BAC
(10/10)

Massachusetts
(1/06)

 

California Pilot Program*
(7/10)

Minnesota
.16 BAC
(7/11)

Montana
(5/09)

 

Colorado
(1/09)

Nevada
.18 BAC
(7/05)

Ohio
(5/09)

 

Connecticut
(1/12)

New Jersey
(1/10)

 

 

Delaware
(1/15)

North Carolina
(12/07)

 

 

District of Columbia
(11/16)

Oklahoma
(11/11)

   

Hawaii
(1/11)

Pennsylvania
.10 BAC
(8/17)
   

Illinois
(1/09)

 South
Carolina

(10/14)
   

Kansas
(7/11)

Wisconsin
(7/10)

   

Louisiana
(7/07)

Wyoming
(7/09)

   

Maine
(12/13)

 

   

Maryland
(10/16)

     

Mississippi
(10/14)

     
Missouri
(3/14)
     

Nebraska
(1/09)

     

New Hampshire
(1/16)

     

New Mexico
(6/05)

     

New York
(8/10)

     

Oregon
(1/08)

     

Rhode Island
(6/16) 

     

Tennessee
(7/13)

     

Texas
(9/15)

     
Utah
(7/09)
     
Virginia
(7/12)
     
Washington
(1/09)
     
West Virginia
(7/08)
     

Vermont
(7/16)

     

(month/year listed note 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.

** In Iowa and Pennsylvania, interlocks are required starting on the first conviction for offenders with a BAC of .10 or greater.