DUI vs DWI in Maryland. What is the difference between DUI & DWI in MD? DUI/DWI Attorney , Allan Rombro, discusses Driving Under the Influence versus Driving While Impaired drawing from 30 years defending DUI and Criminal Traffic cases. If you have been charged with DUI or DWI in MD, call 410 580 9500 or email al***@ro*********.com for a free 60 minute case review.