Leah Hogsten | The Salt Lake Tribune Megha Derchak of Ventura, CA enjoys a mimosa at The Forklift restaurant at Snowbird, December 29, 2018. Utah's new toughest-in-the-nation drunken driving law that takes effect Dec. 30 and lowers the blood alcohol content (BAC) at which drivers are presumed to be legally drunk from 0.08 to 0.05.