In this Tuesday, Nov. 1, 2016, file photo, fire department and rescue officials work at the scene of an early morning fatal collision between a school bus and a commuter bus in Baltimore. National investigators said the driver of the Baltimore school bus, Glen Chappell, that careened into a transit bus, killing six people, including himself, was speeding and had a history of crashes and seizures, in its initial report Wednesday, Dec. 7. (Jeffrey F. Bill/The Baltimore Sun via AP, File)