Wisconsin OWI/DUI defense

2025 Wisconsin Act 210: ignition interlock device overhaul

2025 Wisconsin Act 210, signed by Governor Tony Evers on April 8, 2026 and published April 9, 2026, is the largest single change to Wisconsin's ignition interlock device law since the 2010 Act 100 framework. It is also a double-edged sword. On one side, it eliminates the 30-day occupational-license waiting period after a first-offense refusal and the 45-day waiting period after an OWI conviction, replacing both with immediate eligibility upon IID installation. On the other side, it adds a 180-day IID extension for each of six specific compliance failures, creates a new criminal IID-violation offense, and bans motorcycle operation while on IID restriction. The Act is not yet operative as of May 2026; it takes effect roughly twelve months after WisDOT publishes its administrative-register notice under Section 17(2) of the Act.

Last reviewed 2026-05-01 by Cafferty & Scheidegger, S.C. · Free 24/7 consultations · Hablamos español

Racine County driver blowing into an ignition interlock device (IID) inside a pickup truck outside a Wisconsin tavern, illustrating 2025 Act 210 IID compliance requirements for OWI defendants in Racine, Kenosha, and Walworth counties
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What Act 210 actually changes

Act 210 amends or creates the following Wisconsin statutory sections, all in the IID and occupational-license framework:

The bill originated as 2025 Senate Bill 248, introduced by Sen. Wanggaard on May 9, 2025. Governor Evers signed it April 8, 2026 and the Act was published April 9, 2026.

Effective date matters. The substantive Act 210 changes take effect the first day of the 12th month beginning after the date specified in the WisDOT administrative-register notice required by Section 17(2). As of May 2026 that notice has not been published. Until it is, the 30-day refusal wait, the 45-day OWI wait, and the existing IID-violation framework all remain in force. The earliest the new framework realistically affects cases is 2027.

The good news: faster occupational licenses

The largest practical benefit of Act 210 is the elimination of two waiting periods that have constrained Wisconsin drivers for decades:

Track Pre-Act 210 wait Post-Act 210 wait
1st-offense refusal (§343.305(10)(b)2) 30 days from revocation start None, eligible upon IID installation
OWI revocation (§343.30(1q)(b)3 and (b)4) 45 days from revocation start None, eligible upon IID installation
General §343.10(2)(a) baseline 15 days 15 days, unchanged

The 15-day general baseline is not amended by Act 210. The 30-day and 45-day waits at the refusal and OWI tracks are. For first-time refusal defendants and OWI defendants, the practical effect is roughly two to six weeks of additional driving time recovered, conditional on installing the IID.

The trap: 180-day extensions, six triggers, no cap

Newly created §343.301(6)(b) imposes a 180-day extension to the IID restriction period for each occurrence of any of six specified events, when the event occurs 60 or more days after IID installation:

  1. Tampering with or attempting to circumvent the device.
  2. Unauthorized removal.
  3. Failure to service that results in lockout.
  4. Any attempt to start a vehicle with a breath alcohol concentration of 0.020 or higher.
  5. Failure to take a random retest, unless the device's digital image confirms the vehicle was unoccupied.
  6. Failure to pass a confirmation retest.

No statutory cap on extensions is visible in the Act text. Two triggering events 60 days apart stack to 360 days of additional IID on top of the original order. The 60-day pre-grace period is the only protection for new installations, and once that window closes, every IID-recorded event becomes a potential extension.

Why the 0.020 threshold matters

Trigger four uses a 0.020 BrAC threshold, well below the 0.08 OWI standard and below the 0.04 commercial-driver standard. Mouthwash, cough syrup, fermented foods, and trace residual alcohol from the previous evening can all produce a 0.020 reading. The interlock device does not distinguish between actual alcohol consumption and incidental positive readings, and Act 210 does not distinguish either. Every 0.020 start attempt is a potential 180-day extension after the 60-day grace.

Random retests and the unoccupied-vehicle exception

Trigger five is the most defensible of the six. The Act carves out missed retests where the device's digital image (most modern interlocks include a camera) confirms the vehicle was unoccupied. Drivers should know this exception exists and should preserve their own records of vehicle occupancy at the time of any disputed missed retest.

The new misdemeanor crime: §343.302

Act 210 renumbered the existing §347.413 IID-violation provision into §343.302 and added a new subsection (2) with criminal penalties:

§343.302(2): Fine of not less than $350 nor more than $1,100, plus imprisonment for not less than 5 days nor more than 6 months.

That penalty range is structurally identical to a 2nd-offense OWI misdemeanor. A driver who is on IID for a 1st-offense refusal (which is itself a civil revocation, not a crime) can now face actual jail exposure if charged under §343.302 for an IID-violation offense. This is the most material structural change in Act 210, and it has received almost no public coverage.

The motorcycle ban

§343.301(1g)(am)1 as amended prohibits operation of a Class M (motorcycle) vehicle for the entire duration of the IID order. The statutory text contains no carve-out for drivers who hold only a Class M license, and no carve-out for off-season storage. Drivers who rely on motorcycles for primary or seasonal transportation will need to plan for the IID-period gap.

Service-provider data and compliance review

The newly created §343.301(7) through (9) impose new information-flow requirements between the offender, WisDOT, and the IID service provider:

Practically, this means the IID service provider becomes a quasi-enforcement node, formally responsible for triggering extension reviews. The 7-business-day window also means defense counsel has limited time to request and review the device data before extension determinations are formalized.

Practical posture: who Act 210 helps, who it hurts

Helps: First-offense refusal defendants who need to drive sooner (30-day wait eliminated). OWI defendants at any tier who need to drive sooner (45-day wait eliminated). Defendants who can install IID promptly and then drive their occupational schedule without compliance issues benefit substantially.

Hurts: Anyone on IID who has compliance issues after the 60-day grace window (six triggers, 180 days each, no visible cap). Anyone charged under the new §343.302(2) who now faces 2nd-offense-OWI-tier penalties for IID-violation conduct. Anyone who relies on a motorcycle for transportation during the IID period.

What to do if you are facing OWI or a refusal hearing in 2026

Two distinct case-by-case decisions are now in front of every Racine, Kenosha, and Walworth County OWI defendant:

  1. Whether to accept the IID and file the occupational license immediately (the Act 210 fast track) or fight the underlying charge (no IID required if the charge is dismissed or reduced to a non-OWI). The faster occupational-license route is more attractive under Act 210, but it requires committing to IID compliance for the full ordered period plus any §343.301(6)(b) extensions.
  2. Whether to challenge specific IID-violation events that occur during the ordered period. Because each event now carries a 180-day extension and possible §343.302(2) criminal exposure, contesting an IID violation is no longer a low-stakes paperwork exercise. The defense angles include device calibration records, digital-image authentication for unoccupied-vehicle missed retests, and chain-of-custody on the service provider's data download.

Existing OWI tier pages

Act 210 affects the IID and occupational-license posture at every tier. For tier-specific consequences, see:

Free, confidential consultation: Call or text (262) 632-5000. We have defended Wisconsin OWI cases continuously since 1994 and are tracking Act 210 implementation as WisDOT publishes the administrative notice.

Frequently asked questions

When does 2025 Wisconsin Act 210 actually take effect?
Section 17(2) of Act 210 sets the effective date at the first day of the 12th month beginning after a notice WisDOT publishes in the Wisconsin administrative register. As of May 2026, that notice has not yet been published, which means the substantive IID changes are not yet operative. Section 17 itself is effective the day after Act 210 was published, which means DOT can begin its implementation work immediately. Realistically the substantive changes will not affect actual cases until 2027 at the earliest. Until then, the existing 30-day and 45-day occupational-license waits and the existing IID-violation framework remain in force.
Does Act 210 really eliminate the 30-day waiting period for an occupational license?
Yes, and the change is broader than most reporting suggests. Wis. Stat. §343.305(10)(b)2 (first-offense refusal) previously imposed a 30-day waiting period before the driver was eligible for an occupational license. Act 210 strikes the 30-day language and replaces it with: eligible "upon installation of an ignition interlock device on any motor vehicle that the person operates." The same Act amends §343.30(1q)(b)3 and (b)4 (OWI revocation) to eliminate the 45-day waiting period that has applied to OWI convictions, also replaced with immediate eligibility upon meeting other conditions. Once Act 210 takes effect, both refusal defendants and OWI defendants will be able to drive on an occupational license the same day they install the IID, instead of waiting 30 or 45 days.
What triggers the new 180-day IID extension under Act 210?
Newly created Wis. Stat. §343.301(6)(b) lists six triggers. Each occurrence adds 180 days to the IID restriction period, but only for events occurring 60 days or more after IID installation: (1) tampering with or attempting to circumvent the device, (2) unauthorized removal, (3) failure to service the device that results in lockout, (4) any attempt to start a vehicle with a breath alcohol concentration of 0.020 or higher, (5) failure to take a random retest unless the digital image confirms the vehicle was unoccupied, and (6) failure to pass a confirmation retest. The extensions are per occurrence with no statutory cap visible in the Act text. Two violations 60 days apart can stack to 360 days of extension on top of the original IID period.
Is there really a new criminal offense for IID violations?
Yes. Act 210 renumbered the prior IID-violation provision at §347.413 into §343.302 and created a new subsection (2) with criminal penalties: a fine of not less than $350 nor more than $1,100, plus imprisonment for not less than 5 days nor more than 6 months. That is structurally identical to the penalty range for a 2nd-offense OWI misdemeanor. A defendant who violates the IID order while on a 1st-offense refusal track can therefore face jail exposure under §343.302 even though the underlying refusal was a civil revocation, not a crime. This is the most under-reported provision of Act 210 and it dramatically raises the stakes of every IID compliance issue.
Can I ride my motorcycle while on IID restriction after Act 210?
No. Act 210 amends §343.301(1g)(am)1 to prohibit operation of a Class M (motorcycle) vehicle for the entire duration of the IID order. There is no carve-out in the statutory text for drivers who hold only a Class M license. Practically: any motorcycle operation while subject to IID will be a violation under the new framework, with consequences flowing through the §343.302 criminal pathway and the §343.301(6)(b) 180-day extension framework. Drivers who rely on motorcycles for primary or seasonal transportation need to plan for that gap.

Your defense team

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Patrick K. Cafferty, founding partner and OWI/DUI defense attorney in Racine, Wisconsin

Patrick K. Cafferty

Founding Partner

Marquette Law graduate defending OWI and criminal cases across southeast Wisconsin for over 32 years. Named a Wisconsin Super Lawyer® 18 consecutive years and rated AV Preeminent® by Martindale-Hubbell.

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Jillian J. Scheidegger, partner handling OWI/DUI and criminal defense across southeast Wisconsin

Jillian J. Scheidegger

Partner

Partner since 2013 handling criminal defense and OWI matters for adults and juveniles. Marquette Law graduate, Wisconsin Super Lawyer®, and President-Elect of the Racine County Bar Association.

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Carl Johnson, OWI/DUI trial attorney practicing in Racine, Kenosha, and Walworth counties

Carl Johnson

Attorney

Marquette Law 2006, UW–Madison undergrad. Extensive trial experience including first-degree homicide and sexual assault defense. Racine native practicing in Racine, Kenosha, and Walworth counties.

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Juan S. Ramirez, bilingual OWI/DUI defense attorney and former public defender

Juan S. Ramirez

Attorney

Michigan State Law graduate and former Racine County Public Defender. Bilingual English/Spanish. Won the WACDL Hanson Memorial Advocate Prize for a homicide acquittal. Advises on how criminal charges affect immigration status.

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