540 CMR, § 24.01
The purpose of 540 CMR 24.00 is to promote the safety of the public and that of the licensee by providing minimum physical and mental qualification standards determined to be necessary for the safe operation of a motor vehicle. 540 CMR 24.00 is enacted pursuant to M.G.L. c. 90, § 8, as standards of fitness established by the Registrar for the operation of a motor vehicle. In adopting 540 CMR 24.00 the Registrar has consulted with the Medical Advisory Board, created by M.G.L. c. 90, § 8C. The provisions of 540 CMR 24.00 apply to all applicants and licensees for learner's permits or licenses to operate motor vehicles in the Commonwealth of Massachusetts. Applicants or licensees for motor vehicle license classes other than class D or M licenses, may be subject to distinctive medical qualification standards set forth in 540 CMR 2.15 and 540 CMR 14.04, and such Registry policies in conjunction with 540 CMR 24.00.
540 CMR, § 24.01