Investigators say Darin Thomas, 21 YOA was driving north and crossed into the southbound lane into the path of a semi driven by Richard Grier, 59 YOA of Nampa.
Thomas and his passenger, Christian Alder, 21 YOA of Weiser were killed in the collision. Grier was not taken to the hospital.
Troopers say everyone had their seat belts on. The crash remains under investigation.