A Hughson woman died in a crash on Highway 120 east of Oakdale early Tuesday, authorities said.
According to the California Highway Patrol, the accident occurred at 3:50 a.m. east of Lancaster Road.
The 47-year-old woman, whose name was not released pending notification of her family, was driving a 1998 Mercedes west on Highway 120. Daniel Jones, 37, of Modesto, was driving a 2012 Peterbilt east coming toward Lancaster.
The Mercedes crossed over the double-yellow line and collided head-on with the big rig.
The woman was pronounced dead at the scene. Jones sustained minor injuries and was taken to Memorial Medical Center in Modesto. The accident remains under investigation, but authorities said they do not believe drugs or alcohol were a contributing factor.