It happened around 12:10 a.m. on Lawreceville-Suwanee Road near Horizon Drive, according to CBS Atlanta.
Authorities found Daniel Cochling unconscious and laying in the road. He has multiple injuries.
The vehicle is described a white or light colored tractor trailer. CBS Atlanta reports it reportedly has a sleeper cab, with a 53 foot trailer.
http://accesswdun.com/article/2012/10/254535