- Driver had history of hypertension, diabetes and seizures
- State had told him two months before crash that he could no longer drive a bus
Six people died and at least 10 were hurt the morning of November 1 when the school bus rear-ended a car, crossed into incoming traffic and then sheared off the side of a transit bus. No children were on the school bus at the time.
The drivers of both buses and four passengers on the commuter bus were killed.
The NTSB said Wednesday that the school bus driver had a history of hypertension, diabetes, and seizures.
Glenn Chappell, 67, had been involved in at least a dozen crashes or incidents in the last five years while operating a school bus or personal vehicle. Some involved what witnesses described as seizure-like episodes.
At the time of the November 1 crash, Chappell held a valid medical certificate as required, the NTSB said. But it was not on file with the Maryland Motor Vehicle Administration, which told Chappell two months before the crash that he could no longer drive a bus.
After the crash, Baltimore schools ended the contract with Chappell's employer, AAAfordable Transportion
The NTSB said neither bus had any mechanical issues the day of the crash.
The day of the crash, Baltimore Police spokesman T.J. Smith described the damage to the commuter bus.
"It literally looks like a bomb exploded in the bus," he said. "It is catastrophic damage."
The school bus was traveling at about 45 mph when it struck the transit bus, the NTSB said.