Under the “implied consent” laws in Illinois and the United States, drivers are required to submit to testing of their blood alcohol concentration (BAC). However, implied consent only applies after a person has been arrested. You are not required to take a roadside breathalyzer test when asked, but this refusal may give an officer probable cause to arrest you. After being arrested, if you refuse to submit to a blood, breath, or urine test of your BAC, your driver’s license will be suspended for one year, and you may still be charged with DUI