A driver hit a guardrail on an Oak Cliff highway Saturday and was killed after her car rolled over.

The woman was driving a black Mercedes northbound on U.S. Highway 67 near the junction with Interstate 35 around 3:50 a.m. Saturday. After hitting the guardrail, her car rolled over and landed upside down in the grassy median between the two highways.

She was ejected from the vehicle and hit by several cars. She died at the scene. Her name has not been released.

Police shut down both highways for several hours after the crash.