A woman and a young child were killed when a U-Haul truck hit their car on Highway 60 in Ontario. (Photos: ABC News | CBS News)

Fatal car accident: A woman and a 4-year-old child were killed Saturday night — and a 1-year-old child was in critical condition — when a U-Haul truck rear-ended a disabled car on Highway 60 in Ontario.

•   A woman with two children in her car apparently lost control of the vehicle and spun out on the freeway. The car stalled.

•   A U-Haul truck hit the car from behind. Both vehicles sustained major damage.

•   The woman and one of the children in the car died. The other child was in critical condition.

•   The CHP said alcohol was not a factor.

The deadly freeway crash occurred shortly after 8 p.m., according to a report in the Inland Daily Bulletin.

California Highway Patrol officials said they received several 911 calls saying that a small car had somehow lost control and spun out on westbound Highway 60 near Grove Avenue.

The car stalled in the middle of the freeway, according to a ABC News report. Witnesses said a U-Haul truck crashed into the car from behind.

The details of the accident were still being investigated, but photos show the car smashed up against a guard rail, facing the wrong direction.

The Daily Bulletin reported that motorists stopped to help and at least one of them attempted to perform CPR on one of the victims.

A 4-year-old child who had been riding in the car died at the scene. The woman who was driving the car and a 1-year-old child suffered severe injuries. Both were transported to a nearby hospital, where the woman died. The 1-year-old remained in critical condition.

CHP investigators told ABC News that the driver of the U-Haul truck was cooperating and that alcohol does not appear to be a factor in the crash.

Rash of Road Deaths in San Bernardino County

There were at least seven road deaths in San Bernardino County in the first four days of August, according to a report in the San Bernardino Sun.

Three people died on Wednesday, August 1. At 2:50 a.m., 24-year-old Marine Lt. Todd Allen Lorell of Los Altos was killed on the Twentynine Palms Highway (Route 62) when his car veered into oncoming traffic into the path of a big-rig. At 7:26 a.m., 49-year-old Vanessa Fisher of San Bernardino died when the car in which she was a passenger crashed into a utility pole on North Riverside Avenue in Rialto. And at 5:07 p.m., 48-year-old Gregory Kirwin of Banning died when his car was rear-ended by a Cal Fire Truck on I-210 in San Bernardino.

On Thursday, 23-year-old Jennifer Coronado died when her SUV rolled over and ejected her on I-10 in Ontario after she slammed on her brakes for slowed morning commute traffic.

On Friday, 25-year-old Michael Boone of Highland died after he drove his pickup truck off the side of Highway 330 in the San Bernardino Mountains.

On Saturday, a woman and a 4-year-old were killed when their stalled vehicle was rear-ended by a U-Haul truck on Highway 60 in Ontario (read details above).

Ontario Car Accident Lawyers

The trial attorneys at Blackman Legal Group, a California-based law firm founded by renowned trial attorney Clifford Blackman, have successfully represented car accident victims and their families for 35 years. The nationwide toll-free number to call for a free consultation is 1-866-692-8126.