Police Officer stops to investigate car stopped in breakdown lane with male and female outside car verbally arguing. Officer notes female has blood on her face and hands and is intoxicated. Multiple officers respond to investigate potential domestic violence offense. It is determined that verbal argument ensued between two and female suffered bloody nose. Police arrange for parties to depart scene in separate vehicles, finally turning attention to driver, who admits to having drinks earlier. Police only notice odor of alcohol coming from vehicle and driver was otherwise cooperative throughout the investigation at roadside without exhibiting indicators of impairment. DUI arrest follows after driver submits to field sobriety tests. Defense prepared to argue Motion to Suppress alleging police lacked grounds to further detain driver and investigate DUI. DUI charge dismissed prior to trial.