Patrick R. Musgrove, 28, was charged with vehicular manslaughter, felony aggravated driving under the influence and second offense misdemeanor DUI.
Musgrove struck Winters Wareagle, 23, after the Garden City man got out of his vehicle on Interstate 84 east of Boise after developing car trouble early Sunday. He pulled his 2003 Kia Spectra onto the shoulder near Milepost 68 at about 3:52 a.m. and got out to check on the problem.
Musgrove was headed east in a 2003 Toyota Matrix and struck Wareagle, who died at the scene.
Wareagle’s passenger, Melanie Crutcher, 42, of Garden City, was not injured, Idaho State Police said.
Musgrove is scheduled to be arraigned Monday afternoon in Ada County Magistrate Court.