Which of the following describes a semi-trailer?

A) any trailer that is less than 53 feet long
B) trailer that whose weight must be partially supported by another vehicle
C) any trailer used in a linehaul application
D) trailer hauled by a class 7 or class 8 tractor

Semi-Trailer

A type of trailer designed to be attached and towed by a tractor unit, with a significant portion of its weight borne by the tractor.

Linehaul Application

Refers to the use of vehicles or equipment for long-distance transportation of goods, typically involving large trucks or freight services.