Pub. L. 109-59, tit. IV, subtit. A, sec. 4122
CDL LEARNER’S PERMIT PROGRAM.
SEC. 4122. CDL LEARNER’S PERMIT PROGRAM. Chapter 313 of title 49, United States Code, is amended—(1) in section 31302 by inserting “and may have only one learner’s permit at any time” after “time”;(2) in section 31308—(A) by inserting after “license” the first place it appears “and learner’s permits”;(B) by striking “licenses.” and inserting “licenses and permits.”;(C) by redesignating paragraphs (2) and (3) as paragraphs (3) and (4), respectively; and(D) by inserting after paragraph (1) the following:“(2) before a commercial driver’s license learner’s permit may be issued to an individual, the individual must pass a written test, that complies with the minimum standards prescribed by the Secretary under section 31305(a), on the operation of the commercial motor vehicle that the individual will be operating under the permit;”; and(E) in paragraphs (3) and (4) of section 31308 (as so redesignated) and in section 31309 (b) by inserting after “license” each place it appears “or learner’s permit”.