Multiple defenses can apply to aggravated DUI charges depending on your specific circumstances. Constitutional defenses challenge whether the traffic stop had legal justification or whether arrest procedures violated your rights. If the initial stop lacked reasonable suspicion or arrest lacked probable cause, the entire case can be dismissed. Scientific defenses challenge the reliability of breath or blood testing. Procedural defenses identify violations of proper DUI investigation procedures. Factual defenses present alternative explanations for observed behavior or test results. Additional defenses may challenge whether prior convictions properly enhanced current charges or whether specific aggravating factors actually apply. For example, if your BAC was measured improperly, the high BAC enhancement may not apply. If prior convictions are too old or didn’t meet proper procedural requirements, they may not enhance your current charge. Every aspect of the prosecution’s case can be challenged through appropriate defenses. Your attorney should develop multiple defense strategies rather than relying on a single approach.