49 C.F.R. § 383.135 Minimum passing scores.
Title 49 - Transportation
(a) The driver applicant must correctly answer at least 80 percent of the questions on each knowledge test in order to achieve a passing score on such knowledge test. (b) To achieve a passing score on the skills test, the driver applicant must demonstrate that he/she can successfully perform all of the skills listed in §383.113. (c) If the driver applicant does not obey traffic laws, or causes an accident during the test, he/she shall automatically fail the test. (d) The scoring of the basic knowledge and skills tests shall be adjusted as follows to allow for the air brake restriction (§383.95): (1) If the applicant scores less than 80 percent on the air brake component of the basic knowledge test as described in §383.111(g), the driver will have failed the air brake component and, if the driver is issued a CDL, an air brake restriction shall be indicated on the license; and (2) If the applicant performs the skills test in a vehicle not equipped with air brakes, the driver will have omitted the air brake component as described in §383.113(c) and, if the driver is issued a CDL, the air brake restriction shall be indicated on the license.
Title 49: Transportation
PART 383—COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES
Subpart H—Tests
§ 383.135 Minimum passing scores.
