Effective date of current law
Type of Law Optional
10 years 2006-16
Past year 2015-16*
State
South Dakota
7/1/2011 7/1/2013 9/1/2015 7/1/2009 7/1/2016 7/1/2012 1/1/2009 6/1/2008 7/1/2010 7/1/2009
1,542
54
Tennessee
All All All All All All All
44,966
7,489
Texas Utah
244,991 13,683
27,694
2,573
Vermont Virginia
6,083
817
17,044 90,425 24,331 211,972
2,552
Washington West Virginia
14,133
2,730
Wisconsin Wyoming
.15 BAC .15 BAC
37,299
15,028
971
Total
2,332,323
348,727
*Past-year data: Dec. 1, 2015-Dec. 1, 2016 Source: Data collected from the following ignition interlock manufacturers: ADS; Blow and Drive; Intoxalock; LMG; Smart Start; Sensolock; ACS; Draeger; Budget IID; Simple IID (Smart Start data is from 2010-2016).
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