The moment a police officer asks you to take a breathalyzer test, you’ve got big decisions to make. Unfortunately, most people in this situation don’t fully understand their options and what they can or cannot do. If you’re in that boat, it’s time to get clear on a few things.

There Are Actually Two Different Tests

This is the part that surprises most people, and it’s probably the most important thing to understand about breathalyzer refusals. Not all breath tests are the same, and the rules around refusing them are different depending on which one you’re being asked to take.

The first is the roadside breathalyzer, also called a preliminary breath test or PBT. This is the handheld device an officer pulls out during a traffic stop before any arrest has been made.

“You do not have to submit to a preliminary breath test (PBT) on a portable Breathalyzer,” attorney Ryan Beasley explains. “This roadside Breathalyzer test gives the officer additional reason to make an arrest, but the PBT results are not reliable enough to be admissible in court as evidence of intoxication.” 

That’s a critical distinction. The roadside test is essentially a screening tool that helps the officer decide whether to arrest you. It can’t be used as direct evidence of intoxication in court.

The second test is the evidentiary breath test administered after an arrest, typically at a police station using a more sophisticated and calibrated machine. This is the test that carries the full weight of implied consent laws. Refusing this one is a completely different legal situation than declining the roadside PBT.

What Implied Consent Actually Means

Every state has implied consent laws, and it’s important to understand what these are. When you obtained your driver’s license, you essentially agreed in advance to submit to chemical testing if law enforcement has reasonable cause to request it. That agreement is implied by the act of driving on public roads. You didn’t sign anything specific, but the law treats the license itself as consent.

This means that refusing the post-arrest evidentiary breath test has consequences. You have the right to refuse, but exercising that right triggers automatic penalties that are separate from the DUI charge.

The Automatic License Suspension

In many states, refusing a breath test after an arrest results in an automatic license suspension. This happens through an administrative process that runs parallel to the criminal case. It doesn’t require a conviction or even a guilty plea. The suspension kicks in simply because you refused.

The length of that suspension varies by state and by whether it’s your first refusal or a subsequent one. First-time refusals typically result in suspensions ranging from six months to a year. Repeat refusals can mean longer suspensions. (Plus, some states impose additional penalties on top of the suspension itself.)

What makes this particularly important is the timeline. In most states, you have a very short window after the arrest to request a hearing to contest the administrative suspension, sometimes as few as seven to ten days. Missing that deadline means the suspension goes into effect automatically without any opportunity to challenge it. So, if you’ve recently refused a breath test, contacting a DUI attorney quickly is crucial.

What Refusal Means for Your Criminal Case

Beyond the administrative suspension, refusing a breath test has implications for the criminal DUI case itself. The most significant is that in most states, prosecutors are allowed to tell the jury that you refused. 

That narrative isn’t necessarily fatal to a defense. However, it’s an additional obstacle that wouldn’t exist if you had taken the test. Juries are made up of regular people, and they’re usually going to think, “Why would they refuse the test if they weren’t intoxicated?” It’s difficult to get past that.

On the other hand, removing the breath test result from the equation also removes one of the most straightforward pieces of evidence a prosecutor can use. A specific BAC number is concrete and difficult to argue with. Without it, the prosecution has to rely on officer observations. So there are two sides to this.

Whether Refusing Makes Strategic Sense

The honest answer is that it depends on the situation, and it’s a calculation that’s very difficult to make clearly while sitting in a car on the side of the road. If you’ve had very little to drink and believe you’re well under the legal limit, refusing a test that would likely clear you puts you in a worse position.

If you’ve had significantly more to drink and a test would produce a high BAC reading, the situation shifts. You’re trading a concrete piece of damaging evidence for an administrative penalty and a refusal that prosecutors can reference. Whether that trade is worth making depends on your specific situation and the laws in your state.

The Bigger Picture

Refusing a breathalyzer isn’t a simple black-and-white issue. As we’ve discussed, there are plenty of nuances and circumstances that impact the decision. What is clear is that the decision carries real weight, and it’s extremely important to understand your options.