UPDATE 6:30 p.m. Monday: Jason McGuire, 33, of Arroyo Grande has been identified as the man killed in a traffic collision Saturday on the Nipomo Mesa

McGuire had recently moved from Arizona, according to a press release issued by the San Luis Obispo County Sheriff’s Office. McGuire was driving a Saab southbound on Highway 1 when he collided with a big rig that had broken down in the middle of road.

He was pronounced dead at the scene of the accident.

The CHP is investigating the crash.

ORIGINAL STORY

A 33-year-old man driving south on Highway 1 early Saturday was killed when his car hit a big rig that had broken down in the middle of the road south of Woodland Hills Road on the Nipomo Mesa, according to the CHP.

The Saab’s driver, the sole occupant, was pronounced dead at the scene. He was not identified as of Saturday night, pending notification of next of kin.

CHP is investigating the crash, which led to the closure of Highway 1 for about four hours.

According to a CHP news release, the tractor-trailer was blocking northbound and southbound lanes of Highway 1 when the crash occurred about 5:35 a.m.

The truck driver had placed triangular-shaped reflectors on the road north of the semi and successfully warned several oncoming drivers, the news release said. When the Saab approached, traveling about 55 to 60 mph, the truck driver waived his arms but couldn’t get the driver’s attention, the CHP said. The car struck the left side of the semi, slid under the trailer and left the road, striking a natural gas pipeline.

Cal Fire was called to the scene and warned residents living in the immediate area to stay where they were until the gas leak was stopped, the CHP said. No one was injured because of the leak.