49 C.F.R. § 392.7 Equipment, inspection and use.
Title 49 - Transportation
No commercial motor vehicle shall be driven unless the driver is satisfied that the following parts and accessories are in good working order, nor shall any driver fail to use or make use of such parts and accessories when and as needed:
Service brakes, including trailer brake connections. Parking (hand) brake. Steering mechanism. Lighting devices and reflectors. Tires. Horn. Windshield wiper or wipers. Rear-vision mirror or mirrors. Coupling devices. [33 FR 19732, Dec. 25, 1968, as amended at 60 FR 38746, July 28, 1995]
Title 49: Transportation
PART 392—DRIVING OF COMMERCIAL MOTOR VEHICLES
Subpart A—General
§ 392.7 Equipment, inspection and use.
