How a DUI Defense Attorney Identifies Weaknesses in the Prosecution’s Case

A DUI arrest does not prove guilt. The state must support each charge with lawful, reliable evidence.

A DUI defense attorney Fort Wayne clients trust starts by reviewing every step of the arrest. This review may expose gaps, errors, or facts that weaken the state’s case.

Indiana law often uses the term operating while intoxicated, or OWI. Many drivers still use DUI when discussing the same type of charge.

The Review Starts With the Traffic Stop

Police need a valid legal reason to stop a vehicle. An officer may claim speeding, lane movement, or another traffic breach.

The defense checks dash camera video, body camera footage, dispatch logs, and the police report. These records may show that the claimed reason does not match what happened.

Indiana courts review whether an officer had reasonable suspicion for a traffic stop. When the stop lacks a sound legal basis, a lawyer may ask the court to exclude evidence gathered later.

Police Reports Must Match the Video

An officer’s report may describe slurred speech, poor balance, red eyes, or the smell of alcohol. Video can tell a different story.

A driver may speak clearly, follow directions, and move without trouble. The footage may also show long delays, poor lighting, loud traffic, or confusing instructions.

Small conflicts can affect the officer’s trust level. They may also raise doubt about later claims.

Field Sobriety Tests Need Careful Review

Standard field sobriety tests follow set steps. The main tests include eye movement, walking heel-to-toe, and standing on one leg.

NHTSA training uses set directions, clues, and scoring rules for these tests. A defense lawyer checks whether the officer followed those rules.

Road and Health Conditions Matter

Test results may be less clear on wet pavement, gravel, slopes, or uneven ground. Poor shoes, age, injuries, stress, and health issues can also affect balance.

The attorney may compare the test site with video, photos, weather data, and medical records. NHTSA notes that less-than-ideal road conditions can affect the weight given to test results.

Breath and Blood Tests Are Not Beyond Challenge

A number from a breath or blood test can seem final. It still depends on proper tools, trained staff, and sound handling.

Breath Test Records

The defense may inspect device checks, repair logs, test records, and operator training. It may also review the required wait period before testing.

Mouth alcohol, recent drinks, burping, some health issues, or device faults may affect the result. The facts of the test decide whether these concerns matter.

Blood Sample Handling

Blood evidence creates a chain of custody. The state must show who collected, stored, moved, and tested the sample.

A lawyer checks the blood draw method, tube seals, labels, storage, lab notes, and test process. Missing records or poor handling may reduce the value of the result.

The State Must Prove Every Part of the Charge

A DUI case may involve more than a test score. The state may need to prove operation, intoxication, timing, and other facts tied to the charge.

The defense reviews witness accounts, car location, keys, phone data, receipts, and the arrest timeline. These details may challenge who drove or when any alcohol was used.

Indiana warns that an OWI arrest or failed chemical test can quickly affect driving rights. A failed test may lead to a license suspension, while refusal can bring a longer suspension.

Early Review Can Protect Your Options

Evidence can be lost, erased, or replaced with time. Camera footage, store video, witness memories, and test records may not remain available.

A prompt defense review helps preserve key facts. It also gives your attorney time to file motions, assess risks, and plan the next step.

Every DUI case has its own facts. A careful review may reveal that the state’s case is weaker than it first appears.