DUI Traffic Stop FAQ: Know Your Rights in Arizona

Getting pulled over on suspicion of DUI is one of the most stressful experiences an Arizona driver can face. What you say, what you agree to, and how you respond in those first few minutes can directly shape the strength of the prosecution’s case — or the strength of your defense. James Novak is a former Maricopa County DUI prosecutor who has spent more than 20 years defending DUI and criminal charges in Tempe, Mesa, Chandler, Gilbert, Scottsdale, and Phoenix. Below are answers to the questions drivers ask most often after a DUI traffic stop. For answers specific to your situation, call (480) 413-1499 for a free initial consultation.

What Gives an Officer the Right to Pull Me Over for DUI?

An officer must have reasonable suspicion that a traffic violation or criminal activity is occurring before initiating a traffic stop. A bare hunch is not enough. Common reasons officers cite for DUI-related stops include swerving or drifting between lanes, driving significantly below the speed limit, running a red light or stop sign, making an illegal turn, having a broken headlight or taillight, and erratic braking.

The legality of the initial stop matters. If your attorney can demonstrate that the officer lacked reasonable suspicion, any evidence gathered after the stop — including field sobriety test results, breath tests, and your statements — may be suppressed under the Fourth Amendment. James Novak, with four advanced degrees including a Juris Doctor and a B.S. in Engineering, scrutinizes the technical and legal basis of every traffic stop he defends.

Do I Have to Answer the Officer’s Questions?

No. Arizona law requires you to provide your driver’s license, vehicle registration, and proof of insurance when asked. Beyond that, you have the right to remain silent under the Fifth Amendment. You are not required to answer questions about where you have been, where you are going, how much you have had to drink, or when your last drink was.

Anything you say during a DUI traffic stop can be documented in the officer’s report and used against you in court. A polite statement such as “I respectfully decline to answer questions” is sufficient. You do not need to explain why.

Can I Refuse Field Sobriety Tests in Arizona?

Yes. Field sobriety tests (FSTs) are voluntary in Arizona. There is no legal penalty for declining them. The three standardized tests — the horizontal gaze nystagmus (HGN), the walk-and-turn, and the one-leg stand — are administered roadside and scored subjectively by the officer. Fatigue, nervousness, uneven pavement, poor lighting, footwear, and medical conditions can all produce results that look like impairment.

Officers may tell you it is “in your best interest” to perform the tests. That is their perspective, not a legal requirement. Most experienced DUI defense attorneys — including James Novak — advise clients that politely declining field sobriety tests is within their rights and can limit the evidence available to the prosecution.

Refusing field sobriety tests is different from refusing a chemical test. The consequences are not the same.

Can I Refuse a Breathalyzer or Blood Test?

This depends on the stage of the encounter.

Portable breath test at the roadside (pre-arrest): You may decline this preliminary screening test without triggering implied consent penalties. The handheld device used at the scene is a screening tool, and results from portable breath tests are generally not admissible as direct evidence of BAC at trial.

Chemical test after arrest (at the station or DUI van): Arizona’s implied consent law under A.R.S. § 28-1321 provides that by operating a motor vehicle on Arizona roads, you have already consented to a chemical test — breath, blood, or urine — if lawfully arrested for DUI. Refusing the post-arrest chemical test triggers an automatic 12-month driver’s license suspension through the Arizona Motor Vehicle Division, regardless of whether you are ultimately convicted. A second refusal can result in a two-year suspension.

The officer must properly advise you of the consequences of refusal. If the officer fails to provide this advisement, the refusal and its associated penalties can be challenged. James Novak evaluates every implied consent advisement for procedural errors that may benefit the defense. Call (480) 413-1499 or visit the attorney bio page to learn how his former prosecutor experience applies to your case.

Can the Officer Search My Car During a DUI Stop?

Not without a legal basis. The Fourth Amendment protects you from unreasonable searches and seizures. An officer may search your vehicle during a DUI stop only if one of the following applies:

• You give consent. If the officer asks to search your car and you agree, the search is lawful. You have the right to refuse. A calm, polite “I do not consent to a search” is all that is required.
• Probable cause exists. If the officer observes evidence of a crime in plain view — an open container, drug paraphernalia, or a weapon — that observation can justify a search without your consent.
• Search incident to arrest. If you are placed under arrest for DUI, officers may conduct a limited search of the passenger compartment of the vehicle.
• A warrant is obtained. Officers can seek a warrant authorizing a more extensive search, though this is less common during routine DUI stops.

If an officer conducts a search without consent, without probable cause, and without a warrant, the evidence obtained may be excluded from your case.

What Happens If I Am Arrested for DUI?

After a DUI arrest in Maricopa County, the typical process includes transport to a police station or DUI processing van for a chemical test (breath or blood), booking and fingerprinting, a citation with a court date, and in some cases, vehicle impoundment.

Under A.R.S. § 28-1381, you can be charged with DUI for driving while impaired to the slightest degree, having a BAC of 0.08 or higher, or having any drug or its metabolite in your system. Arizona also imposes escalating charges for extreme DUI (BAC 0.15+) under A.R.S. § 28-1382 and aggravated DUI under A.R.S. § 28-1383.

Once arrested, exercise your right to remain silent and request to speak with a DUI defense attorney before answering any further questions. Under Arizona law, you must be allowed reasonable access to an attorney.

How Long Do I Have to Act After a DUI Arrest?

Critical deadlines begin running immediately. Under A.R.S. § 28-1385, you have only 15 days to request an administrative hearing to challenge a license suspension imposed by the Motor Vehicle Division. If you miss this deadline, the suspension goes into effect automatically — even if your criminal case is still pending. The administrative hearing and the criminal case are separate proceedings with different timelines and different consequences.

This is why contacting a defense attorney within 24 to 48 hours of arrest is critical. The Law Office of James E. Novak handles both the administrative license hearing and the criminal defense in Tempe Municipal Court, Mesa Municipal Court, Chandler Municipal Court, Scottsdale City Court, Gilbert Municipal Court, Phoenix Municipal Court, and Maricopa County Superior Court.

Can a DUI Charge Be Dismissed Based on Problems with the Traffic Stop?

Yes. If the initial traffic stop was unlawful — meaning the officer lacked reasonable suspicion — a defense attorney can file a motion to suppress all evidence obtained as a result of that stop. If the court grants the motion, the prosecution may have no admissible evidence left, which can lead to dismissal of the charges.

James Novak reviews every element of the stop: the officer’s stated reason for pulling you over, dashcam or body camera footage, the administration of field sobriety tests, the handling of chemical testing, and whether your constitutional rights were respected at each stage. His engineering degree gives him a technical advantage in evaluating breath testing equipment calibration, blood draw procedures, and crime lab analysis. His psychology and counseling background informs jury selection and witness evaluation when cases go to trial.

Frequently Asked Questions

Can I be charged with DUI if I was not driving?

Yes. Arizona law applies to anyone in “actual physical control” of a vehicle while impaired. If you are sitting in the driver’s seat with the keys accessible — even if the engine is off — you can face DUI charges under A.R.S. § 28-1381.

Can I get a DUI for prescription medication?

Yes. Under A.R.S. § 28-1381(A)(1), you can be charged with DUI if you are impaired to the slightest degree by any substance — including legally prescribed medication. Having a valid prescription is not a defense to a DUI charge if the medication affected your ability to drive.

Will my case be dismissed if the officer did not read me my Miranda rights?

Not automatically. Miranda warnings are required before custodial interrogation. If the officer questioned you after arrest without reading your rights, your attorney may be able to suppress your statements — but other evidence, such as chemical test results, may still be admissible.

Should I take the field sobriety tests to prove I am sober?

This is a personal decision, but field sobriety tests are designed to detect impairment — not confirm sobriety. Even sober individuals fail these tests due to nervousness, physical conditions, and environmental factors. Declining is within your rights and carries no legal penalty in Arizona.

Talk to a Maricopa County DUI Defense Attorney

What happens at a DUI traffic stop can determine the outcome of your entire case. James Novak brings four advanced degrees — including a J.D., a B.S. in Engineering, an M.A. in Psychology and Counseling, and an MBA — to the defense of every DUI charge. No other DUI attorney in Maricopa County offers this combination of legal, technical, psychological, and business training. As a former prosecutor, he knows how the state builds DUI cases and where the weaknesses are.

Call (480) 413-1499 or contact the firm online for a free initial consultation. Available 24/7. Flat affordable fees, no hidden costs.