An employer shall not knowingly allow, require, permit, or authorize a driver under the age of 21 to operate a commercial motor vehicle in interstate commerce unless the driver is participating in or has completed an apprenticeship program that meets the requirements of subsection (c). 5005. Hours of service requirements for agricultural operations Section 229 of the Motor Carrier Safety Improvement Act of 1999 ( 49 U.S.C. 31136 note) is amended— (1) in subsection (a)(1)— (A) in the matter preceding subparagraph (A), by striking during planting and harvest periods, as determined by each State,