A regional drunk driving crackdown over the weekend led to 21 arrests for driving under the influence of alcohol or drugs. The saturation patrols in the Truckee Meadows Friday and Saturday nights also led to 64 warnings for traffic violations and seven traffic citations. There were 97 traffic stops total. The regional enforcement was conducted by the Reno Police Department, Nevada Highway Patrol, Sparks Police Department and the Washoe County Sheriff’s Office.