49 CFR § 380.105 - Definitions.
---
identifier: "/us/cfr/t49/s380.105"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 380.105 - Definitions."
title_number: 49
title_name: "Transportation"
section_number: "380.105"
section_name: "Definitions."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "380"
part_name: "SPECIAL TRAINING REQUIREMENTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 31133, 31136, 31305, 31307, 31308, 31502; sec. 4007(a) and (b), Pub. L. 102-240, 105 Stat. 1914, 2151-2152; sec. 32304, Pub. L. 112-141, 126 Stat. 405, 791; and 49 CFR 1.87."
regulatory_source: "69 FR 16732, Mar. 30, 2004, unless otherwise noted."
cfr_part: "380"
---
# 380.105 Definitions.
(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.