CAMP PENDLETON (CBS 8 / CNS) - Authorities released the names Wednesday of an Oceanside woman and her preschooler daughter killed in a crash with a big rig on Interstate 5 in the San Onofre area.
Jillian Sedivec, 28, and 4-year-old Savanah Wilson were heading north shortly before 9:30 a.m. Tuesday when their 2007 GMC Yukon plowed into the back of the supermarket cargo hauler at the end of a line of trucks preparing to enter the San Onofre Commercial Vehicle Enforcement Facility, according to the California Highway Patrol.
The impact left the hood and part of the interior of the SUV wedged underneath the cargo trailer of the supermarket delivery vehicle.
The motorist and her child, who was in the back seat of the SUV, died at the scene, CHP public-affairs Officer Jim Bettencourt said.
The driver of the Ralphs semi was unhurt.
Chase Welch told CBS News 8 he was on I-5 heading northbound near the scales past Oceanside Tuesday when it happened.
"I was coming up along behind it and I saw a car speeding over the miles per hour it should be, and the semi was pulling over they came up and smacked into the back side of it," he said.
"There's quite a few signs in the area that state 'Watch out for slow moving vehicles in right hand lane, watch out for trucks entering the facility,'" CHP Officer Jim Bettencourt said.
Officer Bettencourt says the CHP tries to prevent back-ups into the scales, but shutting them down to relieve traffic can cause other problems.
"Officers are pretty diligent about making sure that none of the big rigs are backing up into the main portion of the freeway, but what inevitably happens is, once they shut the scales facility down, it takes a while for trucks to realize that the facility is shut down and for them to get going again, so it causes some traffic from time to time," Bettencourt explained.
Intoxication was not believed to have been a factor in the crash, which left the entire northbound side of the freeway blocked for a time and created gridlock as far south as State Route 76 in Oceanside for hours.