About 7:40 p.m., central standard time, on December 23, 1983, a southbound activity bus (bus) suddenly veered leftward, crossed the centerline of State Route 61, a 2-lane, 2-way highway, and struck head on a northbound tractor cargo tank semitrailer near Devers, Texas. The tractor cargo tank semitrailer penetrated from. 5.5 to 6.5 feet into the passenger compartment of the 1970 former schoolbus. The busdriver and all 21 passengers aboard were ejected through the front opening created in the collision. The truckdriver, the busdriver, and eight bus passengers were killed. Thirteen other bus passengers were injured.