Highland Park, IL DUI Defense Attorney

Experienced Driving Under the Influence Defense Lawyer in Highland Park, Illinois

If you are accused of getting behind the wheel while impaired by drugs or alcohol, you could face very serious criminal charges in Illinois. Prosecutors do not treat these cases lightly, even if it is only your first DUI. For legal help, turn to a Highland Park DUI defense lawyer.

At The Law Offices of Matthew R. Gebhardt, P.C., we have experience representing people accused of drunk driving, and we have a history of successful DUI case results to show for it. As a former prosecutor, Attorney Matthew Gebhardt leverages his career insights to develop tailored legal strategies for his clients, working toward an ideal outcome in every case.

How Reasonable Suspicion Can Affect a DUI Case in Highland Park

Before an officer can pull a driver over on suspicion of DUI, the law requires reasonable suspicion that a traffic violation or another crime has occurred. This standard is lower than probable cause, but it still requires more than a hunch. An officer might point to weaving between lanes, speeding, a broken taillight, or erratic braking as justification for a stop. If a stop cannot be tied to a specific, articulable reason, the legality of the entire encounter can be called into question.

When a stop lacks a valid basis, any evidence gathered afterward, including field sobriety test results, breath test results, or statements made to police, can become subject to challenge. Illinois courts have suppressed DUI evidence in cases where an officer could not adequately explain the reason for a stop or relied on a justification that did not hold up under examination.

Field Sobriety Test Results Can Be Challenged

Field sobriety tests are often treated as objective evidence of impairment, but these tests depend heavily on an officer's subjective interpretation of a driver's performance. Standardized tests such as the walk-and-turn, one-leg stand, and horizontal gaze nystagmus test were not designed to account for every variable that can affect a person's balance, coordination, or eye movement.

Poor lighting, uneven pavement, inappropriate footwear, nervousness, fatigue, and pre-existing medical conditions can all affect a driver's performance without any connection to alcohol or drug use. An officer's training and adherence to standardized procedures during the test can also come up during a DUI case, since deviations from proper protocol can undermine the reliability of the results. A defense strategy can focus on whether the test was administered correctly and whether the conditions at the time made an accurate assessment possible in the first place.

Is BAC Testing Always Reliable?

Breath test devices are frequently presented as scientifically precise, but their accuracy depends on consistent calibration, proper maintenance, and correct usage by a trained officer. A device that has not been serviced according to schedule, or one operated by an officer who deviated from required procedures, can produce a reading that does not reflect a driver's true blood alcohol concentration.

Blood tests carry their own vulnerabilities, including questions about how a sample was drawn, stored, and transported before testing. A break in the chain of custody, contamination, or delayed testing can all raise doubts about the accuracy of a result. At The Law Offices of Matthew R. Gebhardt, P.C., we examine the full testing process in every case for errors in procedure that can affect how evidence is presented in court.

Contact a Highland Park DUI Defense Lawyer Today

Looking closely at how a traffic stop and arrest unfolded can uncover details the initial report leaves out. At The Law Offices of Matthew R. Gebhardt, P.C., our attorney is ready to dig into the details of your arrest and fight for your rights from start to finish. Contact our Highland Park, Illinois DUI defense attorney or call 847-239-4703 to schedule a free initial consultation.