03 September, 2025
When facing a traffic stop for suspected driving under the influence (DUI), few moments are as critical as understanding and exercising your legal rights. One of the most pressing questions people face during such situations is whether they can refuse a breathalyzer test. While reflexively declining may seem like a way to protect oneself, Indiana law implements critical frameworks, such as implied consent, that complicate this decision. Below, the Law Offices of Shane O’Donnell break down whether it’s legal to refuse a breathalyzer test in Indiana, the consequences of doing so, and potential legal defenses you may have.
Under Indiana law, operating a vehicle on the state’s roads comes with an important caveat. By simply driving, you are granting what is known as “implied consent” to submit to a certified chemical test if law enforcement suspects you of driving under the influence of alcohol or drugs. Certified chemical tests include breathalyzer tests conducted on specific machines, such as the Intoximeter, typically used at police stations.
It’s important to note that roadside breath tests, also referred to as preliminary or portable breath tests, are not the same as certified tests. These are used primarily to establish probable cause for a DUI arrest and are not admissible as evidence in court. While you can legally refuse this preliminary test, refusing the certified breathalyzer is where legal consequences intensify.
Refusing a certified chemical test after being taken into custody triggers significant penalties under Indiana’s implied consent law. Here’s what you need to know:
While the consequences of refusal are serious, understanding your legal defenses can empower you during this challenging time:
Encountering the complexities of Indiana’s DUI laws without guidance can lead to life-altering consequences. If you’re facing charges or dealing with the repercussions of refusing a breathalyzer test, the Law Offices of Shane O’Donnell can provide the experienced and personalized legal defense you need. With a deep understanding of Indiana’s implied consent laws and DUI regulations, we can work to safeguard your rights, minimize penalties and explore the best possible outcomes. Contact our office today to schedule a consultation.
We can help you get through your legal crisis. Contact the Law Offices of Shane O’Donnell today.