Experience in Drunk Driving Cases

Knowledge and Experience Matter in Michigan Drunk Driving Defense

Michigan has many excellent criminal defense lawyers. What it has far fewer of are lawyers who have made drunk driving defense a serious, disciplined, and sustained area of practice. That distinction matters. A DUI case is not merely a traffic ticket with higher stakes. It can involve constitutional law, statutory license sanctions, field sobriety testing, breath alcohol science, blood testing, toxicology, police procedure, expert testimony, negotiation strategy, and trial practice.

I often meet people who are facing their first criminal charge and are trying to decide whom to hire under considerable stress. Most have never been arrested. Most have never appeared in district court. Many have never hired a lawyer for anything more serious than a real estate closing, a will, or a civil matter. They are suddenly expected to evaluate lawyers, compare fees, understand legal risks, and make a decision that may affect their license, employment, reputation, and liberty.

That is not an easy position to be in. A polished website, a familiar local name, or a claim of being a “DUI lawyer” does not necessarily tell you whether the lawyer has the training and experience needed to evaluate a drunk driving case properly. Years ago, when the Yellow Pages were the main form of lawyer advertising, many lawyers advertised themselves as “DUI specialists” while also handling divorce, probate, personal injury, custody disputes, medical malpractice, and general criminal matters. The same problem exists today, except the advertising has moved online. A good website designer can make almost any lawyer appear impressive.

The problem is not that a lawyer must handle only DUI cases to be competent. The problem is that drunk driving defense is a specialized area, and a person charged with OWI should know what questions to ask before hiring someone. A lawyer who treats these cases as routine may miss issues involving the traffic stop, the detention, the arrest, field sobriety testing, implied consent, breath testing, blood testing, discovery, or trial strategy. A lawyer who is unfamiliar with the science may see a number on a police report and assume the case is over. In my practice, that is often where the real evaluation begins.

Price Should Be Compared Against the Work Required

Price is always a legitimate concern. Lawyers vary widely in what they charge for drunk driving cases, and the fee alone does not prove skill in either direction. A very high fee does not guarantee excellence, and a low fee may reflect a limited plan of action. The more useful question is what the lawyer is actually going to do for the fee.

A person should be cautious of any lawyer who presents a bargain price while also implying that the case will receive serious scientific, factual, and legal review. A meaningful DUI defense requires time. The lawyer must obtain and review police reports, video recordings, breath test records, blood test materials when applicable, chemical test notices, implied consent paperwork, field sobriety test observations, dispatch information when relevant, and the client’s driving record. In some cases, the lawyer must file motions, subpoena witnesses, consult experts, challenge the stop or arrest, evaluate the chemical test, and prepare for trial.

At the same time, a client should not necessarily have to pay in advance for a full jury trial before the lawyer has completed the preliminary review. Some cases require trial preparation from the beginning. Others require focused motion practice or negotiation after a careful review of the evidence. The proper fee structure should correspond to the lawyer’s role, the complexity of the case, the court involved, the client’s goals, and the amount of work reasonably anticipated.

The important question is not simply, “How much do you charge?” The better question is, “What will you do to determine whether this case can be challenged?”

Knowledge of Michigan Drunk Driving Law

A Michigan DUI lawyer should know the core statutes without hesitation. The principal drunk driving statute is MCL 257.625. Chemical testing and preliminary breath test issues are addressed in MCL 257.625a. Implied consent is addressed in MCL 257.625c. A lawyer handling these cases should be able to explain the difference between OWI, operating while visibly impaired, high BAC, second offense consequences, and repeat offender licensing issues.

The lawyer should also understand that the criminal case and the driver’s license consequences are related but not identical. Courts impose criminal sentences. The Michigan Secretary of State imposes license sanctions based on the reported conviction and the person’s driving record. In implied consent cases, timing is critical. If a chemical test refusal is alleged, the request for an implied consent hearing must be filed within the required statutory period. A lawyer who does not know that deadline without looking it up may not regularly handle these cases.

The same is true of the distinction between a preliminary breath test refusal and an implied consent refusal. They are not the same thing. They do not carry the same consequences. They arise at different points in the investigation. A lawyer who blurs those categories may not be prepared to give reliable advice about the risks of the case.

Field Sobriety Testing Requires More Than Reading the Police Report

Field sobriety testing is one of the most misunderstood parts of a drunk driving investigation. Many police reports describe field sobriety tests in a manner that sounds objective and scientific, but the usefulness of those observations depends on how the tests were instructed, demonstrated, administered, scored, and documented.

I have been trained in the standardized field sobriety test battery and have taken advanced training in this area. I have also taught Michigan lawyers about the National Highway Traffic Safety Administration’s standardized field sobriety testing materials. That training matters because the details matter. It is one thing to know that an officer performed the horizontal gaze nystagmus test, the walk-and-turn, and the one-leg stand. It is another thing to know whether the officer performed them properly.

A lawyer evaluating a drunk driving case should understand the purpose of the standardized field sobriety test battery, the clues officers are trained to look for, the limitations of the tests, and the difference between performance evidence and chemical evidence. A simple question may reveal a great deal: how is the HGN test supposed to be administered? A lawyer who cannot answer that question with confidence may not be prepared to challenge field sobriety evidence effectively.

Breath Testing Is Scientific Evidence, Not Magic

Breath testing is common in Michigan drunk driving cases. Because it is common, many lawyers and judges become accustomed to treating the breath result as if it speaks for itself. It does not. Breath testing is an indirect method of estimating alcohol concentration. The machine does not test the blood. It measures alcohol in a breath sample and uses assumptions to report a result.

A lawyer handling these cases should understand how the breath instrument operates, what the machine is designed to measure, what quality assurance records may matter, what maintenance records may reveal, and what limitations exist in breath alcohol testing. A lawyer should also know how to evaluate observation periods, mouth alcohol concerns, simulator checks, replicate sample agreement, radio frequency issues, operator compliance, and the specific administrative rules and procedures applicable to the test.

I have received factory training related to the former BAC Datamaster and have spent many years studying breath testing issues. I own breath testing devices and have trained other lawyers in this area. That background affects how I read a breath test case. I do not look only at the final number. I look at how the number was produced.

A person interviewing a lawyer should ask for a straightforward explanation of how the breath machine works and what its limitations are. The answer does not need to sound like a graduate chemistry lecture. It should, however, demonstrate that the lawyer knows more than the prosecutor’s conclusion.

Blood Testing and Toxicology Require Careful Review

Blood cases require a different kind of analysis. Blood alcohol testing is commonly performed by gas chromatography with flame ionization detection. Controlled substance testing may involve different analytical methods, including mass spectrometry depending on the testing performed. A lawyer handling a blood or drugged driving case should know what records to request, what method was used, what substances were tested, what substances were not tested, whether a result was quantified, and what the reported concentration does and does not prove.

In a blood case, the defense review may include the blood draw, chain of custody, preservative and anticoagulant issues, laboratory method, calibration, quality controls, chromatograms, analyst notes, uncertainty, reporting limits, and the difference between detection and impairment. In drug cases, the presence of a substance is not always the same thing as proof that the person was unsafe to drive. The lawyer must understand the difference between toxicology and courtroom shorthand.

A qualified drunk driving defense lawyer should be able to explain what materials will be requested from the laboratory and how those materials may be used in cross-examination. If the lawyer cannot explain the basic difference between alcohol testing and controlled substance testing, that is a concern.

Trial Experience Still Matters

Most drunk driving cases do not go to trial. That does not make trial experience unimportant. The possibility of trial affects negotiation, motion practice, investigation, and case evaluation. A lawyer who is unwilling or unable to try DUI cases may approach every file as a plea negotiation. Sometimes a negotiated resolution is the correct decision. Sometimes it is not. The decision should follow from the facts and the law, not from the lawyer’s discomfort in front of a jury.

A lawyer who regularly defends drunk driving cases should be able to identify actual jury trial experience in this field. Trial experience does not mean that the lawyer wins every case. No serious trial lawyer wins every case. In fact, a lawyer who claims never to lose DUI trials is probably not trying enough difficult cases. The better measure is whether the lawyer has actually stood in front of juries, cross-examined officers, challenged chemical test evidence, presented defense themes, and accepted the burden of trying hard cases when trial was necessary.

Bench trials have their place in limited circumstances, but in drunk driving cases they are often risky. A person charged with OWI should not assume that a bench trial is the same as a jury trial with fewer formalities. The decision to waive a jury must be made carefully, with attention to the judge, the evidence, the legal issues, and the defense theory.

Professional Training and Networking

Memberships do not prove competence. A lawyer can join organizations and still lack skill. But serious participation in professional organizations can show that the lawyer is investing in the field. Lawyers who defend drunk driving cases benefit from training, collaboration, and exposure to lawyers who are actively litigating the same scientific and legal issues.

Organizations such as the National College for DUI Defense, Criminal Defense Attorneys of Michigan, the Wayne County Criminal Defense Bar, the Institute of Continuing Legal Education, and Michigan-focused drunk driving defense groups can provide useful training and professional contact. The point is not the logo on the website. The point is whether the lawyer is actively trying to improve.

Warning Sign: “I Know the Judge”

One warning sign is the lawyer who emphasizes personal relationships with prosecutors or judges. Professional relationships can matter in the sense that lawyers who practice regularly in a court may understand local procedures and expectations. But it is improper and misleading to imply that a friendship with a prosecutor or judge will produce a special result.

If a lawyer’s best selling point is access rather than ability, the client should be cautious. A judge is required to decide cases under the law. A prosecutor is not supposed to give away cases because of friendship. A defense lawyer should be hired for judgment, preparation, knowledge, and advocacy, not for vague suggestions of insider influence.

Warning Sign: “Former Prosecutor” as a Substitute for Defense Skill

Some excellent defense lawyers previously worked as prosecutors. That experience can be useful. But “former prosecutor” is not, by itself, proof of defense ability. Prosecuting cases and defending cases require different instincts. A prosecutor reviews evidence from the government’s perspective. A defense lawyer must challenge assumptions, test proof, identify constitutional issues, investigate weaknesses, and protect the client from overreach.

A former prosecutor may have valuable courtroom experience. Or the lawyer may simply have handled cases from the government side and then used that title for marketing. The title should not end the inquiry. Ask what the lawyer has done as a defense attorney. Ask about motions. Ask about field sobriety training. Ask about breath and blood testing. Ask about jury trials.

Warning Sign: Guaranteed Results

No lawyer can ethically guarantee that a client will avoid conviction, jail, probation, license sanctions, or other consequences. Criminal cases involve facts, law, judges, prosecutors, witnesses, records, scientific evidence, and uncertainty. A lawyer can give an informed assessment. A lawyer can explain common outcomes in a particular court. A lawyer can identify possible defenses. A lawyer can prepare aggressively. But a lawyer cannot guarantee the result.

This is especially true in drunk driving cases. The defense may involve constitutional issues, video evidence, officer testimony, field sobriety tests, chemical testing, and expert analysis. The strength of the case may change after discovery is reviewed. A lawyer who promises a result before reviewing the evidence is not giving legal analysis. The lawyer is selling comfort.

Warning Sign: “I Can Get Your License Back Faster”

License sanctions in Michigan drunk driving cases are controlled by statute and administered by the Secretary of State based on the reported court action and the person’s driving record. A lawyer cannot simply persuade the Secretary of State to ignore a mandatory sanction. A lawyer cannot create a restricted license if the statute does not allow one. A lawyer cannot speed up the Secretary of State because the client needs to drive for work.

What a lawyer can do is evaluate the criminal charge, examine whether a different conviction would produce different license consequences, identify legal defenses, protect hearing deadlines, and advise the client about the licensing impact of each possible outcome. In some repeat-offender situations, timing and litigation strategy may matter. But a promise to “get your license back faster” usually means the lawyer intends to plead the case quickly, not necessarily well.

The Better Question Is Whether the Lawyer Can Evaluate the Case

Choosing a drunk driving lawyer should not be based on slogans. It should be based on whether the lawyer can evaluate the case from every relevant angle. Was the stop lawful? Was the detention lawfully extended? Was there probable cause for arrest? Were the field sobriety tests administered and interpreted properly? Was the breath or blood test reliable? Were all required records obtained? Are there suppression issues? Is there a viable trial defense? What are the license consequences of each possible outcome?

When I evaluate a drunk driving case, I do not assume that the police report is complete, that the chemical test is beyond challenge, or that the prosecutor’s first offer is the correct resolution. Some cases should be negotiated. Some should be litigated. Some should be tried. The right decision depends on the facts, the law, the science, the court, and the client’s goals.

A person charged with drunk driving in Michigan should hire a lawyer who understands those distinctions. Knowledge and experience do not guarantee a particular outcome. They do, however, give the client a better chance of making informed decisions in a case where uninformed decisions can have lasting consequences.

Attorney William J. Maze

Attorney William J. Maze
  • Court-Qualified Expert Witness
  • SFST · Datamaster · Intoxilyzer 9000
  • NHTSA-Certified SFST Instructor
  • Former President — CDAM 2014–2015
  • Former Adjunct Professor of Forensic Science
  • Member — National College for DUI Defense
  • Board Member — Michigan Association of OWI Attorneys

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