Alcohol interlock laws by state
April 2021
Interlock required | |||||
---|---|---|---|---|---|
State | to drive during ALS (first offense) | to drive during post-conviction license suspension | to reinstate license after conviction | ||
First offender | Repeat offender | First offender | Repeat offender | ||
Alabama | no option for driving during suspension | yes | yes | no | yes |
Alaska | yes | yes | yes | yes | yes |
Arizona | no, although interlock use is incentivizedFootnote 1 | no | yes | yes | yes |
Arkansas | yes | yes | yes | no | no |
California | no, although interlock use is incentivizedFootnote 1 | yes, in Alameda, Los Angeles, Sacramento, and Tulare counties | yes | yes, in Alameda, Los Angeles, Sacramento, and Tulare counties | yes, in Alameda, Los Angeles, Sacramento, and Tulare counties |
Colorado | yes | yes | yes | no | yes |
Connecticut | no option for driving during suspension, which lasts 45 days, after which interlock required to reinstate | no option for driving during suspension, which lasts 45 days, after which interlock required to reinstate | no option for driving during suspension, which lasts 45 days, after which interlock required to reinstate | yes | yes |
Delaware | no option for driving during suspensionFootnote 2 | yes | yes | yes | yes |
District of Columbia | no | yes | yes | no | no |
Florida | no | no, unless offenders' BAC at or above 0.15 | yes | no, unless offenders' BAC at or above 0.15 | yes |
Georgia | no, although interlock use is incentivizedFootnote 3 | no | yes | no | yes |
Hawaii | yes | yes | yes | yes | yes |
Idaho | no, although interlock required to reinstate | no for offenders with BAC below 0.20; no option for driving during suspension for offenders with BAC at or above 0.20Footnote 4 | no option for driving during suspensionFootnote 5 | yes | yes |
Illinois | yes | no | yes | no | yes |
Indiana | no | no | no | no | no |
Iowa | yes | yes | yes | no | yes |
Kansas | no option for driving during suspension, which lasts 30 days, after which interlock required to reinstate | for offenders with BAC below 0.15, no option for driving during suspension, which lasts 30 days, after which interlock required to reinstate | yes | yes | yes |
Kentucky | no ALS for first test failure | yes | yes | no | no |
Louisiana | no, although interlock use is incentivizedFootnote 1 | yes | yes | no | no |
Maine | no, although interlock use is incentivizedFootnote 6 | no, although interlock use is incentivizedFootnote 6 | yes | no | no |
Maryland | no, although interlock use is incentivizedFootnote 3 | yes, if license suspension imposed | yes | yes, for "driving under the influence" violations | yes |
Massachusetts | no option for driving during suspension, which lasts 30 days | no | yes | no | yes |
Michigan | no ALS for first test failure | no, unless offenders' BAC at or above 0.17 | yes | no | yes |
Minnesota | no, although interlock use for offenders below 0.16 is incentivizedFootnote 3 and interlock required for offenders with BAC at or above 0.16 | no, although interlock use for offenders below 0.16 is incentivizedFootnote 3 and interlock required for offenders with BAC at or above 0.16 | yes | no | no |
Mississippi | yes | yes | yes | no | no |
Missouri | no, although interlock use is incentivizedFootnote 1 | no, although interlock use is incentivizedFootnote 1 | yes | no | yes |
Montana | no ALS for first test failure | no | no | no | no |
Nebraska | yes | yes | yes | yes | yes |
Nevada | yesFootnote 7 | yes | yes | yes | yes |
New Hampshire | no option for driving during suspension | yes | no option for driving during suspension | no | yes |
New Jersey | no ALS for first test failure | no suspension after conviction | yes | yes | yes |
New Mexico | yes | yes | yes | yes | yes |
New York | no ALS for first test failure | yes, as a condition of probation or conditional discharge | yes | yes, as a condition of probation or conditional discharge | yes |
North Carolina | no | no, unless offenders' BAC at or above 0.15 | no option for driving during suspension | no, unless offenders' BAC at or above 0.15 | yes |
North Dakota | no | no | no | no | no |
Ohio | no | no, although interlock use is incentivizedFootnote 3 | yes | no | no |
Oklahoma | yes | yes | yes | no | no |
Oregon | no | yes | yes | yes | yes |
Pennsylvania | no ALS for first test failure | no, unless offenders' BAC at or above 0.10 | yes | no, unless offenders' BAC at or above 0.10 | yes |
Rhode Island | no ALS for first test failure | yes | yes | no | yes |
South Carolina | no ALS for first test failure | no, for offenders with BAC below 0.15; no option for driving during suspension for offenders with BAC at or above 0.15 | no option for driving during suspension | no, unless offenders' BAC at or above 0.15 | yes |
South Dakota | no ALS for first test failure | no | no | no | no |
Tennessee | no ALS for first test failure | yes | yes | no | yes, when prior conviction occurred within the past 5 years |
Texas | no | yes, if license suspension imposed | yes | no | yes, when prior conviction occurred within the past 5 years |
Utah | no | no option for driving during suspension | no option for driving during suspension | yes | yes |
Vermont | yes | yes | yes | no | no |
Virginia | no option for driving during suspension, which lasts 7 days | yes | yes | no | yes |
Washington | yes | yes | yes | yes | yes |
West Virginia | yes | yes | yes | no | yes |
Wisconsin | no | no | no | no | no |
Wyoming | no | no | yes | no, unless offenders' BAC at or above 0.15 | yes |