If you’re stopped for suspected DUI in Washington and you are asked to take a breath test, the way you respond can have serious legal consequences. Many drivers wonder whether refusing to blow into a breathalyzer — either at the roadside or back at the station — will help or hurt their case. Let’s break down the key differences and legal outcomes.
Roadside Portable Breath Test (PBT): Voluntary and Less Consequential
The roadside portable breath test (PBT) is typically offered during a DUI stop before you are formally arrested. In Washington State, you are not legally required to take the PBT, and your refusal cannot be used against you in court. This test is mainly used by officers to establish probable cause for arrest.
That said, the officer may still arrest you based on your driving, appearance, smell of alcohol, or performance on field sobriety tests, even without a PBT result.
Station Breath Test (BAC Test): Required Under Implied Consent
Once you are arrested and taken to the station, refusing the official breath test has serious legal consequences. Under Washington’s Implied Consent Law, every licensed driver agrees to submit to a breath or blood test if lawfully arrested for DUI.
If you refuse:
- Your license will likely be revoked for at least one year — even if you’re not convicted in court.
- The refusal can be used as evidence of guilt at trial — the prosecutor may argue you refused because you knew you were impaired.
- Depending on how your case is resolved, you may be required to install an ignition interlock device (IID) for a longer period.
Can Refusing the BAC Help My Case?
While it might seem like refusing a test would make it harder for prosecutors to prove you were intoxicated, that’s not always true. Washington prosecutors can still rely on:
- Officer observations (slurred speech, bloodshot eyes, poor coordination)
- Field sobriety test results
- Your driving behavior
- The fact that you refused the test, which they may argue shows “consciousness of guilt”
In many cases, refusals do not make your case better — they simply add an additional layer of penalties and challenges. Furthermore, some prosecutor’s offices have standards that do not allow for more favorable negotiated outcomes when the driver refused the breathalyzer at the station.
Final Thoughts: Talk to a DUI Defense Attorney ASAP
If you’ve been arrested for DUI and refused a breath test, it’s important to understand the legal implications immediately. You have just 7 days to request a Department of Licensing hearing to contest your license suspension.
An experienced DUI defense lawyer can help you:
- Evaluate the strength of the state’s case without a BAC reading
- Challenge the legality of the traffic stop or arrest
- Navigate the DOL hearing and license consequences
At Witt Law Group, we understand how stressful and confusing DUI charges can be — especially when your decisions at the scene can impact your case for months or years. Reach out for a free consultation and let us help protect your license, your record, and your future. (360) 792-1000
We handle cases in Kitsap and Thurston Counties including the cities of Bremerton, Olympia, Port Orchard, Tumwater, Lacey, Poulsbo, Kingston, Bainbridge Island, Silverdale, and Seabeck.
