Effective Illinois DUI defenses target the state's proof at every stage of 625 ILCS 5/11-501. The stop itself is challenged when the officer lacked reasonable articulable suspicion. Field sobriety performance is attacked using NHTSA scoring flaws, medical conditions, footwear, roadside conditions, and camera angles. Breath and blood results are contested through calibration logs, observation-period violations, and 625 ILCS 5/11-501.2 foundational failures. Statutory Summary Suspension petitions attack the sworn report and the 46-day trigger. A Chicago DUI lawyer builds the record early so suppression, dismissal, or reduction to reckless driving becomes available before trial. The strongest defense argument is whichever one the state cannot document its way past.
