The Texas Department of Public Safety said the students in a school bus which was struck by a tractor-trailer Friday morning were uninjured.

The school bus belonged to Ben Bolt-Palito Blanco ISD. DPS spokesman Nathan Brandley said the eight students onboard the bus were evaluated by EMS personnel and released at the scene of the accident.

According to state troopers, driver inattention and fog were likely to blame for the three-vehicle accident. The accident occurred at about 7 a.m. Friday as the bus was parked and loading students on the southbound lane of U.S. Highway 281 in the Green Acres area south of Alice.

Brandley said the bus had its stop-arm activated and lights on. Another motorist driving a passenger car stopped for the bus on the adjacent lane. The driver of the tractor-trailer was unable to stop in time as it approached, troopers said. The tractor-trailer hit the back of the passenger car and then collided with the rear center and left of the school bus.

The driver of the passenger vehicle and the driver of the tractor-trailer were taken to Christus Spohn Hospital for examination.