49 C.F.R. § 380.105
Definitions.
Cite as 49 C.F.R. § 380.105 (2026)
(a) The definitions in part 383 of this subchapter apply to this part, except where otherwise specifically noted.
(b) As used in this part:
Classroom instructor
means a qualified LCV driver-instructor who provides knowledge instruction that does not involve the actual operation of a longer combination vehicle or its components. Instruction may take place in a parking lot, garage, or any other facility suitable for instruction.
Longer combination vehicle (LCV)
means any combination of a truck-tractor and two or more trailers or semi-trailers, which operate on the National System of Interstate and Defense Highways with a gross vehicle weight (GVW) greater than 36,288 kilograms (80,000 pounds).
LCV Double
means an LCV consisting of a truck-tractor in combination with two trailers and/or semi-trailers.
LCV Triple
means an LCV consisting of a truck-tractor in combination with three trailers and/or semi-trailers.
Qualified LCV driver-instructor
means an instructor meeting the requirements contained in subpart C of this part. There are two types of qualified LCV driver-instructors: (1) classroom instructor and (2) skills instructor.
Skills instructor
means a qualified LCV driver-instructor who provides behind-the-wheel instruction involving the actual operation of a longer combination vehicle or its components outside a classroom.
Training institution
means any technical or vocational school accredited by an accrediting institution recognized by the U.S. Department of Education. A motor carrier's training program for its drivers or an entity that exclusively offers services to a single motor carrier is not a training institution.