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Understanding the Disconnect Defense in a Michigan DUI Case
The disconnect defense is a legal strategy in a Michigan DUI case that highlights the inconsistency—or disconnect—between a defendant’s high blood alcohol concentration (BAC) results and their observable behavior at the time of arrest. For instance, if a breath or blood test shows a BAC of 0.20%—a level typically associated with symptoms like emotional instability, impaired motor coordination, and slurred speech as detailed in Dubowski – stages of alcohol effects—yet the individual demonstrates steady balance, clear speech, and passes field sobriety tests, this discrepancy can be used to challenge the validity of the BAC evidence.
Dubowski’s research provides a clear framework for evaluating expected behaviors at different BAC levels:
- At 0.09%-0.25% (Excitement stage), symptoms such as emotional instability, sensory-motor impairment, and slurred speech are common.