BLYTHE, Calif. (AP) - A bus rolling through a remote stretch of desert struck a load of metal pipes scattered across a dark California highway Wednesday, then slid down an embankment and overturned in an accident that killed four passengers and seriously injured at least seven others.
Only a minute or two before the collision, the pipes had tumbled from a flatbed truck that jackknifed after drifting into the dirt median on Interstate 10, the main road linking Southern California and Arizona, the California Highway Patrol said.
It was the second serious crash in a month involving a truck and passenger bus in California. In April, a big rig smashed head-on into a charter bus carrying high school students on a university visit, killing 10 people.
Wednesday's crash occurred around 2:15 a.m. just west of Blythe, near the Arizona border, where the eastbound truck's spilled cargo obstructed both lanes in each direction. The truck carried dozens of pipes, some as long as 50 feet.
The bus was about three-quarters through its 800-mile trip from El Paso, Texas, to Los Angeles. Authorities believe there were 33 passengers aboard, but they were checking that against the trip manifest. Seven passengers were seriously hurt and taken to hospitals, and 14 others sought evaluation of minor injuries.
Neither driver was hurt.
As the driver of the truck, whose identity was not released, tried to pass slower vehicles in an area with a 70 mph speed limit, he drifted onto the dirt shoulder and lost control, CHP Lt. Cmdr. Gustavo Guzman said.
Other drivers would have struggled to see the pipes until they were in range of a vehicle's headlights. The interstate has no lights, and the night had only a half moon.
Almost immediately, two eastbound passenger vehicles struck the pipes, though nobody was hurt in those crashes, Guzman said.
About a minute later, the bus bore down.
Richard Lee of La Mirada was sleeping in the passenger seat of an SUV that hit the pipes before the bus. He said he woke to two loud pops, got out and soon after saw the lights of what he thought was another truck approaching from the opposite direction.
"When I found out about the casualties I felt very, very lucky that I survived," Lee told KABC-TV.
The truck was operated by VG Transport and based in Rialto, east of Los Angeles. According to federal safety records, VG Transport has not been involved in any crashes reported to state officials over the past two years. Those records say the company has only one truck.
The truck passed three inspections over the past two years. After one of the inspections, a driver was not allowed to finish the trip for reasons that were not immediately clear.
The registration for the 2006 Freightliner expired in January, according to records with the California Department of Motor Vehicles. The man listed as the contact for VG Transport, Victor Esteban Galvan, could not be reached for comment. No one picked up at the listed phone number, and the voice mail box was full.
The driver of the bus, operated by El Paso-Los Angeles Limousine Express Inc., had taken over the route in Phoenix, said Terri Kasinga of California Department of Transportation.
The company received a "satisfactory" safety rating as of its last review in February, according to federal inspection records. Other records kept by the Federal Motor Carrier Safety Administration show the company's 55 vehicles have been involved in five crashes since June 2012, one of which involved a single death.