Florida School Bus Crash Kills 2 After Sedan Hits Rear Wheels

Q: What caused the Malibu driver to cross the center line that morning, triggering this tragic chain reaction?

Authorities have not determined what caused the Chevy Malibu driver to cross the center line. Sheriff Grady Judd said the car drifted into oncoming traffic “for unknown reasons,” and investigators were still treating that as an open question. What is established so far is the sequence: around 6:15 a.m., while it was still dark, the westbound Malibu crossed over on Lucerne Park Road and struck the school bus near its rear tandem wheels. The impact tore off a tire, the bus lost traction, crossed into the opposite lane, and then hit a silver Jeep head-on. Investigators said the Malibu driver was cooperating, told deputies they were on the way to work, and had not been arrested at the time of the briefings. Officials also said they were reviewing video and continuing a traffic-homicide investigation, but no public finding had been released on whether the drift was caused by distraction, fatigue, impairment, a medical episode, speed, or a mechanical problem. So, based on the information released, the cause of the Malibu crossing the center line remains unknown pending the investigation.

Q: Why did a clipped rear tire cause a massive school bus to veer uncontrollably into a fatal collision?

Yes. A rear tire being torn off can make even a large school bus suddenly uncontrollable, especially at road speed. On a school bus, the rear tandem wheels do far more than carry weight. They keep the bus stable, support braking grip, and help the driver maintain directional balance. If a car strikes the rear wheel set hard enough to rip off one tire, the bus can instantly drop on that corner, lose traction on one side, and yaw sharply. That creates a strong sideways pull the driver may have only fractions of a second to correct. The problem is magnified by the bus’s size and physics. A fully loaded bus has a very high center of gravity, long wheelbase, and substantial momentum. Once the rear starts stepping out, the vehicle can pivot or “fishtail,” and the front axle may no longer be pointed where the driver wants it to go. On a narrow two-lane road, there is little recovery space. Investigators said the Malibu crossed the center line and struck the bus near its rear tandem wheels, tearing off a tire. That kind of impact likely acted like a destabilizing blow at the back of the vehicle, not just a simple flat tire. The bus then veered into the opposite lane and hit the Jeep head-on before overturning. Whether mechanical factors, speed, road conditions, or braking also contributed will depend on the crash reconstruction. But from a vehicle-dynamics standpoint, losing a rear wheel assembly in a side impact is fully capable of sending a bus into a fatal cross-lane collision.

3 articles · Updated · The New York Times · Oct 5

A bus carrying 39 people to Winter Haven High School overturned after a Chevrolet sedan crossed the center line and struck its rear wheels, setting off a four-vehicle crash that killed a 10th-grade girl and a Jeep occupant.
Sheriff Grady Judd said the impact tore off a tire, sending the bus into an oncoming Jeep that caught fire; authorities have not said why the sedan drifted across the road and are investigating.
Five to seven people were taken to hospitals, one in critical condition, while AdventHealth Heart of Florida and Lakeland Regional Health each said they received 10 patients who were later released.
More than 100 emergency responders worked the scene and reunited families as Lucerne Park Road was expected to stay closed most of Monday; Judd called it the area's worst bus tragedy in decades.