SAN JOSE -- A 27-year-old San Jose man was killed Sunday night when his motorcycle collided with the back of a car while he was weaving between the fast lanes on Highway 101 in South San Jose, according to the California Highway Patrol.

Investigators say the man was riding a 2006 Harley-Davidson in the far-left northbound lane past Metcalf Road around 8:10 p.m. when he tried to pass between two vehicles and hit the back of a Honda Civic, Officer Amy Tritenbach said.

The impact "propelled" the rider and his motorcycle across the freeway with the man landing in second left-most lane, Tritenbach said. He was then hit by a passing Honda Accord. He died at the scene.

Tritenbach said the rider, whose identity was not immediately released, was wearing a helmet and did not appear to be impaired by drugs or alcohol. She attributed the crash to rider error.

"It was an unsafe maneuver, unsafe passing at an unsafe speed," Tritenbach said.

All of the vehicles involved were traveling at least at the posted speed limit, which is 65 mph on the stretch of freeway where the collisions occurred. Both car drivers were uninjured and stopped at the scene. The crash blocked three lanes of traffic for four hours.

The accident remains under investigation.

Contact Robert Salonga at 408-920-5002. Follow him at Twitter.com/robertsalonga.