B Train
A combination vehicle consisting of a tractor and two or three semi-trailers, where each towed trailer is hitched to a fifth wheel on the frame of the preceding trailer.

Courtesy of Transport Canada
A combination vehicle consisting of a tractor and two or three semi-trailers, where each towed trailer is hitched to a fifth wheel on the frame of the preceding trailer.

Courtesy of Transport Canada
A contract for the carriage of goods.
A bill of lading has three purposes:
The weight of a shipment as shown on the freight bill; not necessarily the actual weight.
a) A person who arranges for transportation of loads for a percentage of the revenue from the load.
b) An owner-operator