A woman who was hit by a car after jumping from a Palo Alto overpass and later died Monday has been identified by the Santa Clara County Medical Examiner's Office as Alison Chang, 50, of Palo Alto.

The collision blocked westbound Oregon Expressway in Palo Alto during much of the morning, resulting in a traffic that extended to U.S. Highway 101, police said.

The incident occurred at about 6:30 a.m. Chang suffered major injuries and was transported to a nearby hospital, where she died. The incident appeared to be a suicide, Palo Alto police spokesman Lt. James Reifschneider said.

A woman driving the sedan stopped and cooperated with police, he said. She will not face charges for the collision.

If the driver was injured, the injury didn't appear significant enough to require medics to take her to a hospital, Reifschneider said.