“Implied Consent” in Wisconsin: What It Means for Your OWI Case

Whether you are driving home through the rolling hills of Lodi, navigating the busy intersections of Waunakee, or heading back from a weekend at Devil’s Lake near Baraboo, a flashing red and blue light in the rearview mirror can be a jarring experience. For many drivers, the confusion truly begins when an officer asks for a breath or blood sample at the station. This request is not a simple suggestion; it is a formal procedure based on a legal concept known as implied consent.

Much like the warning signs of foundation defects, such as cracks in the basement walls or doors that no longer shut properly, the early stages of a traffic stop can signal deeper legal issues that require professional attention before the situation worsens. When these “warning signs” of a serious legal challenge appear, knowing your rights and the specific requirements of Wisconsin law is the first step toward a stable defense.

The Basic Definition of Implied Consent

Under Wisconsin Statute 343.305(2), any person who drives or operates a motor vehicle upon the public highways of this state is deemed to have given consent to one or more tests of their breath, blood, or urine. This is a condition of the privilege of holding a driver’s license. In the eyes of the state, you already agreed to these tests the moment you turned the key in the ignition on a public road.

This law allows law enforcement to request a chemical sample if they have probable cause to believe you are operating while intoxicated (OWI). While you physically have the power to say no, the law treats that choice as a withdrawal of the agreement you made when you accepted your license.

The Informing the Accused Requirement

Law enforcement cannot simply demand a blood draw without following a specific protocol. Before a chemical test is administered, the officer must read a standard form known as “Informing the Accused.” This document explains the consequences of both taking the test and refusing it.

According to Wisconsin Statute 343.305(4), the officer must inform you that:

• If you take the test and the results show a prohibited alcohol concentration, your operating privilege will be suspended.
• If you refuse the test, your operating privilege will be revoked, and you will be subject to other penalties.
• The fact that you refused can be used against you in court as evidence of guilt.
• After you take the agency’s test, you have the right to request an alternative test provided by the agency or a test of your own choice at your own expense.

If an officer fails to read this information correctly or omits certain sections, it may provide a basis for challenging the subsequent revocation or the admissibility of the test results.

Preliminary Breath Tests (PBT) vs. Chemical Tests

It is vital to distinguish between the handheld breathalyzer used on the side of the road and the formal chemical test performed at a police station or hospital. The roadside breath test, or PBT, is generally used by officers in Manitowoc or Baraboo to help establish probable cause for an arrest.

Under Wisconsin Statute 343.303, the results of a PBT are typically only admissible in court to show that the officer had a legal reason to arrest you. They are not usually used as direct evidence of your exact blood alcohol concentration (BAC) at trial. Refusing a PBT is generally not subject to the same severe “refusal” penalties as the formal evidentiary test, though it may still lead the officer to proceed with an arrest based on other observations.

Penalties for Refusing a Chemical Test

If you choose to refuse a chemical test after the “Informing the Accused” script has been read, the penalties are often more severe than the OWI charge itself. Wisconsin law views a refusal as a violation of the “contract” you made with the state to drive on public roads.

According to the Wisconsin Department of Transportation, the primary penalties for a first-offense refusal include:

• Mandatory License Revocation: A one-year revocation of your driving privileges.
• Ignition Interlock Device (IID): A requirement to install an IID in every vehicle you own or operate for one year.
• Waiting Period: You must wait 30 days before you can apply for an occupational license, whereas a person who takes the test may be eligible for an occupational license immediately upon a first-offense OWI conviction.

These penalties are administrative and happen through the Department of Transportation, regardless of whether you are eventually found guilty or innocent of the OWI charge in criminal or municipal court.

The 10-Day Window for a Refusal Hearing

When you refuse a test, the officer will issue a “Notice of Intent to Revoke.” This document is your “warning sign” that your license is in immediate jeopardy. Under Wisconsin Statute 343.305(9)(am), you only have 10 days from the date of the notice to request a hearing in court to challenge the revocation.

If you do not file a written request for a hearing within those 10 days, your license will be automatically revoked 30 days after the notice was issued. At this hearing, the issues are limited. The court will primarily look at whether the officer had probable cause, whether the officer followed the proper “Informing the Accused” procedure, and whether you truly refused.

Chemical Tests for Unconscious Drivers

A common question involves what happens if a driver is unconscious following an accident on a road like Highway 12 or I-43. Wisconsin law Statute 343.305(3)(b) states that a person who is unconscious or otherwise incapable of withdrawing consent is presumed not to have withdrawn it.

In these cases, law enforcement can often order a blood draw without reading the “Informing the Accused” form. While the U.S. Supreme Court case Mitchell v. Wisconsin (2019) clarified that “exigent circumstances” generally allow for warrantless blood draws on unconscious drivers, these cases remain highly technical and sensitive to the specific facts of the accident.

Why the Location of Your Case Matters

The procedures for an OWI can vary slightly depending on where the stop occurred. A case in the Lodi or Waunakee area may be handled by the Columbia County or Dane County court systems, while a stop in Baraboo will likely go through Sauk County. Each jurisdiction has its own court schedules and nuances in how it handles refusal hearings.

For example, the proximity of Manitowoc to major state thoroughfares often leads to stops involving both local police and the Wisconsin State Patrol. Each agency must still adhere strictly to the state statutes regarding implied consent, but the administrative process of gathering evidence and filing reports can vary between agencies.

Choosing Your Next Steps

Dealing with an OWI and a potential refusal revocation can feel like trying to repair a shifting foundation. The more time passes without addressing the problem, the more the structural integrity of your legal standing can weaken. Understanding the difference between actual consent and the “implied” consent you gave by driving is the first step in building a solid defense.

At West & Dunn, our team focuses on providing clear, straightforward guidance to individuals facing the complexities of Wisconsin’s OWI laws. We believe that every driver deserves to understand the charges against them and the options available for their defense. We take a detail-oriented approach to every case, examining whether law enforcement followed every required step of the implied consent process.

If you are concerned about how a refusal or an OWI charge will affect your future, we are here to help you understand the landscape. Our attorneys serve clients throughout Wisconsin, including Lodi, Waunakee, Baraboo, and Manitowoc.

Contact us at 608-490-9449 to discuss your situation and learn more about how the law applies to the specific details of your case.