391.67—Farm vehicle drivers of articulated commercial motor vehicles.
The following rules in this part do not apply to a farm vehicle driver (as defined in § 390.5 of this subchapter) who is 18 years of age or older and who drives an articulated commercial motor vehicle:
(b)
Subpart C (relating to disclosure of, investigation into, and inquiries about the background, character, and driving record of drivers);
[63 FR 33278, June 18, 1998]