At 6 p.m. on June 6, 1975, a southbound tractor-semitrailer (truck) collided with a northbound intercity-type bus near Hamilton, Georgia. The bus was the second vehicle of a four-vehicle convoy. Two southbound automobiles were waiting for the convoy to pass before the first could turn left into a driveway. The truck was following the automobiles; when the truckdriver attempted to avoid the cars, his truck jackknifed and collided with the bus. The vehicles collided on a two-lane highway in a sparsely populated, rural area; a light-to-moderate rainshower was in progress. The truckdriver and busdriver were killed in the collision and 19 of 20 bus passengers were injured.