DUI Saturation Patrol – 11th (Harrison) District 23 Mar 2017 The Chicago Police Department will be conducting a DUI Saturation Patrol in the 11th (Harrison) District this weekend. The DUI Saturation Patrol will commence at 7 p.m. on Friday, March 24, 2017 and end at 3: a.m. on Saturday, March 25, 2017. For more information, click here.