OWI cases are won by focusing on the prosecution’s proof, not by accepting the police narrative as the starting point. In Detroit, the most effective OWI defenses usually arise from a disciplined review of the stop, the investigation, and the chemical testing records.

The initial traffic stop must be supported by reasonable suspicion or another lawful basis. If the stop is unlawful, evidence gathered after the stop may be suppressed, including field sobriety tests and chemical test results.

The arrest must be supported by probable cause. Probable cause often rests on subjective observations and field tests conducted under roadside conditions, and those tests can be undermined by cross-examination, video review, and alternative explanations for the alleged “clues.”

Chemical testing is frequently the centerpiece, but it still requires lawful acquisition and reliable administration. A defense strategy should demand complete discovery, preserve video and dispatch records, and file targeted motions that force the state to prove compliance and reliability.

OWI Defenses: Where Cases Are Won

A Michigan OWI prosecution under MCL 257.625 is built element by element. The Traffic Benchbook’s Section 625 chapter organizes practice around those elements and the common procedural issues, including arrest procedures, plea requirements, and chemical testing rules. For defense purposes, the most productive areas typically involve the legality of the seizure, the reliability of impairment evidence, and the admissibility and trustworthiness of chemical testing.

Element disputes can matter even in seemingly straightforward cases. Michigan courts have addressed how Section 625’s location language applies. For example, the Benchbook cites People v. Rea in discussing the “within this state” language as a jurisdictional element. These details become important when an OWI is alleged in a private parking area, a roadway near jurisdictional boundaries, or where the record is imprecise.

Impairment evidence is also contestable. Field sobriety tests are not infallible and can be affected by injury, anxiety, fatigue, footwear, lighting, and the way instructions were delivered. Video is often the best neutral witness. When the video undermines the claimed “clues,” it becomes harder for the prosecution to meet its burden beyond a reasonable doubt.

Chemical testing challenges involve both law and science. Issues can include lawful authority for obtaining the sample, compliance with observation and collection rules, instrument performance, and how the result relates to the time of driving. Cases such as McNeely and Birchfield, and Michigan decisions applying those principles, provide a legal framework for challenging unlawful testing and overbroad justifications.

Why Choose William Maze As Your Criminal Defense Attorney?

As a Detroit criminal defense attorney, I provide specialized expertise in Detroit's court systems. I understand the specific procedures, judges, and prosecutors in Detroit courts, giving my clients a distinct advantage in their criminal defense cases.

Local Expertise:

• Knowledge of Detroit judges' preferences
• Experience with Detroit prosecutors
• Understanding of local court procedures
• Relationships with court personnel

Attorney Credentials:

• 28+ years Detroit experience
• Expert witness qualified
• Former CDAM President
• SFST certified instructor

William J. Maze, Esq.

Detroit Criminal Defense Attorney

Expert Witness 28+ Years