Officials said the accident happened just after 4:30 a.m. at Alessandro Boulevard and Graham Street.
Police said Jessica Hinck was driving a Ford F-150 when she hit a Ford Focus being driven by 51-year-old Doug McKibben, who was stopped at a red light.
Responding officers found McKibben unresponsive in the driver's seat. He was transported to Riverside County Regional Medical Center where he was pronounced dead.
Hinck was booked into the Robert Presley Detention Center for gross vehicular manslaughter.