Highway accident report. Intercity bus loss of control and collision with bridge rail on Interstate 70 near Frederick, Maryland, August 25, 1985.

The probable cause of the accident, in which an intercity bus collided with a reinforced concrete bridge rail and by which 6 persons were fatally injured, was the loss of control of the bus during a braking maneuver on wet highway pavement with low and variant frictional qualities at a speed too great for the existing weather conditions.