How many cubic feet of cargo can an average 18 wheeler hold (in the back part of the truck)

Standard lengths are 28 ft, 32 ft, 34 ft, 36 ft, 40 ft, 45 ft, 48 ft, and 53 ft! Average width of a trailer is 102 inches.
Updated on Thursday, February 02 2012 at 01:09AM EST
Collections: cargocubic foot