DUI, DWI, or Driving Under the Influence of Alcohol is a regulation used to prevent motorists from operating vehicles when they have been drinking and may not execute safe judgment. As blood alcohol levels rise neurological reflexes so important for safe driving decline. The determination of DUI is made by measuring a driver's blood alcohol percentage. The blood alcohol percentage that constitutes DUI or DWI varies from state to state. If you have been arrested for DUI or DWI you do have options. DUI and DWI Lawyers specialize in helping individuals fight DUI and DWI convictions. The courts may have you believe that there is no recourse for a DUI or DWI arrest but that is not necessarily true. If you hire an Attorney who specializes in DUI he/she may be able to help you avoid losing your license.