NTSB releases preliminary report on Pa. Turnpike crash that killed 5

In the preliminary report, officials said the posted speed limit in the area of the crash is 70 mph, but an advisory sign ahead of the crash location warns of a 55-mph speed limit for an upcoming curve.

The 57-passenger Z&D Tour bus had a 58-year-old driver and 61 passengers on board, officials said. The driver and two passengers, including the child, died. About 59 other passengers were hurt.

Two UPS employees who were in one of the tractor-trailers were also killed.

Investigators said the bus crashed and rolled before it was struck by the FedEx tractor-trailer. One of the UPS tractor-trailers then crashed into the wreckage. The driver of the car swerved to try to avoid the crash, sliding to a stop next to the UPS truck. The second UPS tractor-trailer also swerved before hitting the car.

CLICK HERE to read the full preliminary report.

Officials said light snow was falling at the time of the crash and the roadway had been treated with salt.

Thursday's report said the NTSB is gathering records on the commercial drivers involved in the crash and is "evaluating occupant protection, human performance, vehicle performance, the Pennsylvania Turnpike Commission's snow- and ice-removal procedures, collision avoidance technology installed on the three truck-tractors, and the safety culture of Z&D Tour."

NTSB officials said, “all aspects” of the crash remain under investigation as they work to determine the probable cause.

Following the release of the report on Thursday, Carl DeFebo from the PA Turnpike Commission released this statement: