Pulled over for suspected OWI in Iowa? Learn whether you can refuse field sobriety tests and how it may affect your case.
If you are stopped for suspected drunk driving in Iowa, the officer may ask you to perform field sobriety tests—such as walking a straight line, standing on one leg, or following a pen with your eyes. Many drivers wonder: Can I refuse?
Iowa Law on Field Sobriety Test Refusal
Unlike chemical tests (breath, blood, or urine), Iowa law does not require you to submit to field sobriety tests. You can refuse them without automatic penalties like license suspension. However, refusal may raise suspicion and can still be used as evidence in an OWI investigation. Additionally, refusing field sobriety tests often leads to arrest and being asked to take a chemical test, where the refusal does trigger the suspension
Implied Consent Applies to Chemical Tests, Not Field Tests
Iowa’s implied consent law only applies to chemical testing after an OWI arrest. If you refuse a post-arrest breath test, you can face immediate license suspension and other consequences. Field sobriety tests, on the other hand, are voluntary—but officers rarely explain that clearly.
Pros and Cons of Refusing
Pros: Refusing may prevent the officer from collecting potentially flawed evidence.
Cons: Your refusal may be mentioned in court as a sign of impairment.
Key Takeaway
While you can legally refuse Iowa field sobriety tests, it’s important to remain calm, polite, and aware that the officer may still arrest you based on other observations. If you are charged with OWI, an experienced Iowa criminal defense attorney can challenge the validity of the stop, the tests, and the arrest.
