49 CFR 391.45 : Transportation (§ 1.1 To Parts 1581-1699) — (Parts 300-302 To Appendix G To Subchapter B Of Chapter Iii) — Other Regulations Relating To Transportation (Continued) (Parts 300-302 To Appendix G To Subchapter B Of Chapter Iii) — Federal Motor Carrier Safety Administration, Department Of Transportation (Parts 300-302 To Appendix G To Subchapter B Of Chapter Iii) — Federal Motor Carrier Safety Regulations (§ 350.101 To Appendix G To Subchapter B Of Chapter Iii) — Qualifications Of Drivers And Longer Combination Vehicle (Lcv) Driver Instructors (§ 391.1 To Appendix A To Part 391) — Physical Qualifications And Examinations (§ 391.41 To § 391.49) — Persons who must be medically examined and certified.

The following persons must be medically examined and certified in accordance with § 391.43 of this subpart as physically qualified to operate a commercial motor vehicle:

(a) Any person who has not been medically examined and certified as physically qualified to operate a commercial motor vehicle;

(b)(1) Any driver who has not been medically examined and certified as qualified to operate a commercial motor vehicle during the preceding 24 months; or

(2) Any driver authorized to operate a commercial motor vehicle only with an exempt intracity zone pursuant to § 391.62, or only by operation of the exemption in § 391.64, if such driver has not been medically examined and certified as qualified to drive in such zone during the preceding 12 months;

(c) Any driver whose ability to perform his/her normal duties has been impaired by a physical or mental injury or disease; and

(d) Beginning June 22, 2018, any person found by a medical examiner not to be physically qualified to operate a commercial motor vehicle under the provisions of paragraph (g)(3) of § 391.43.