49 CFR §§391.41 – 391.49
49 CFR 391.43 : Details how a certified medical examiner must perform the physical exam and issue the Medical Examiner’s Certificate.
49 CFR 391.44 : Explains alternative vision standards for drivers who do not meet standard distant acuity or field of vision in one eye.
49 CFR 391.45 : Specifies which commercial drivers are required to undergo regular medical examinations.
49 CFR 391.46 : Outlines the physical qualification rules for drivers with insulin-treated diabetes mellitus.
49 CFR 391.47 : Provides a process to resolve conflicts when a medical evaluation disagrees with a treating clinician’s report. (download PDF )
49 CFR 391.49 : Explains the Skill Performance Evaluation (SPE) certificate program for drivers with missing or impaired limbs.