Two Penn State students traveling to Lewistown on a student teaching assignment Friday were involved in a car accident on U.S. Route 322 that left one dead and another in serious condition.

Stephanie Lent, 22, an education major from Fairlawn, N.J., was taken to Geisinger Medical Center in Danville after the car she was driving crossed the grass median near the Milroy exit of Route 322 in Mifflin County.

The 22-year-old passenger, Allison Caimi (senior-education), of Ridgway, was pronounced dead at the scene, Pennsylvania State Police Trooper Eric Guido said.

Both women work as student teachers at Highland Park Elementary School in Lewistown, Guido said.

Lent was driving a 2003 Toyota Highlander eastbound on Route 322 when, for unknown reasons, she lost control of the car and crossed the median into westbound traffic, according to the police report.

The car passed into the right lane in front of a tractor-trailer carrying an oversized load. According to the police report, the tractor-trailer, driven by John Couch, 25, of Huntingdon, hit the car on the passenger side.

The impact sent the car into a spin and into the path of a UPS truck traveling in the left lane. The UPS truck, driven by Fred Grenninger, 44, of Huntingdon, swerved to avoid Lent's car but struck it on the driver's side, the report indicates.

Police said Couch and Grenninger were not injured.

When police arrived, Lent's car was lying on its side with the driver's side up, and the roof of the car still touching the front of the UPS truck, Guido said.

The roof of the car was removed to extract Lent from the driver's seat. Caimi was ejected from the car, Guido said.

Lent was flown to Geisinger with a broken clavicle and tibia and internal bruising.

He said Lent doesn't remember the crash but told state troopers she believed both she and Caimi were wearing seatbelts. According to the police report, Lent was not wearing a seatbelt. Guido said police do not think the accident was alcohol related.

Guido said police do not know if Lent was speeding when she lost control. The speed limit for that section of Route 322 is 55 mph.

Both westbound and eastbound lanes of Route 322 were closed for 10 hours on Friday to remove wreckage and to reconstruct the accident.