Each CDL instructor MUST possess the same or high class of license with the same endorsements and hold that license for a minimum of 2 years to become a CDL instructor per the Federal Motor Carrier Safety Administration (FMCSA). 49 CFR 380.605
Theory instructor means an individual who provides knowledge instruction on the operation of a CMV and meets one of these qualifications:
(1) Holds a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided and has at least 2 years of experience driving a CMV requiring a CDL of the same (or higher) class and/or the same endorsement and meets all applicable State qualification requirements for CMV instructors; or
(2) Holds a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided and has at least 2 years of experience as a BTW CMV instructor and meets all applicable State qualification requirements for CMV instructors.
Behind-the-wheel (BTW) instructor means an individual who provides BTW training involving the actual operation of a CMV by an entry-level driver on a range or a public road and meets one of these qualifications:
(1) Holds a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided and has at least 2 years of experience driving a CMV requiring a CDL of the same or higher class and/or the same endorsement and meets all applicable State qualification requirements for CMV instructors; or
(2) Holds a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided and has at least 2 years of experience as a BTW CMV instructor and meets all applicable State qualification requirements for CMV instructors.
Exception applicable to paragraphs (1) and (2) of this definition: A BTW instructor who provides training solely on a range which is not a public road is not required to hold a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided, as long as the instructor previously held a CDL of the same (or higher) class and with all endorsements necessary to operate the CMV for which training is to be provided, and complies with the other requirements set forth in paragraphs (1) or (2) of this definition.
(3) If an instructor's CDL has been cancelled, suspended, or revoked due to any of the disqualifying offenses identified in § 383.51 of this subchapter, the instructor is prohibited from engaging in BTW instruction for 2 years following the date his or her CDL is reinstated.