Drivers who were regularly employed before January 1, 1971.

The provisions of §§ 391.21 (relating to applications for employment), 391.23 (relating to investigations and inquiries), and 391.31 (relating to road tests) do not apply to a driver who has been a single-employer driver (as defined in § 390.5 of this subchapter) of a motor carrier for a continuous period which began before January 1, 1971, as long as he/she continues to be a single-employer driver of that motor carrier. [86 FR 57076, Oct. 14, 2021]