Home/CFR/Title 49/Part 393
FEDERAL · 49 CFR

Part 393 — Parts and Accessories Necessary for Safe Operation

90 sections · Title 49: Transportation

§ 393.1Scope of the rules in this part.
§ 393.3Additional equipment and accessories.
§ 393.5Definitions.
§ 393.7Matter incorporated by reference.
§ 393.9Lamps operable, prohibition of obstructions of lamps and reflectors.
§ 393.11Lamps and reflective devices.
§ 393.13Retroreflective sheeting and reflex reflectors, requirements for semitrailers and trailers manufactured before December 1, 1993.
§ 393.17Lamps and reflectors—combinations in driveaway-towaway operation.
§ 393.19Hazard warning signals.
§ 393.20§ 393.20 [Reserved]
§ 393.22Combination of lighting devices and reflectors.
§ 393.23Power supply for lamps.
§ 393.24Requirements for head lamps, auxiliary driving lamps and front fog lamps.
§ 393.25Requirements for lamps other than head lamps.
§ 393.26Requirements for reflectors.
§ 393.27§ 393.27 [Reserved]
§ 393.28Wiring systems.
§ 393.29§ 393.29 [Reserved]
§ 393.30Battery installation.
§ 393.31-393.33§§ 393.31-393.33 [Reserved]
§ 393.40Required brake systems.
§ 393.41Parking brake system.
§ 393.42Brakes required on all wheels.
§ 393.43Breakaway and emergency braking.
§ 393.44Front brake lines, protection.
§ 393.45Brake tubing and hoses; hose assemblies and end fittings.
§ 393.46§ 393.46 [Reserved]
§ 393.47Brake actuators, slack adjusters, linings/pads and drums/rotors.
§ 393.48Brakes to be operative.
§ 393.49Control valves for brakes.
§ 393.50Reservoirs required.
§ 393.51Warning signals, air pressure and vacuum gauges.
§ 393.52Brake performance.
§ 393.53Automatic brake adjusters and brake adjustment indicators.
§ 393.55Antilock brake systems.
§ 393.60Glazing in specified openings.
§ 393.61Truck and truck tractor window construction.
§ 393.62Emergency exits for buses.
§ 393.63§ 393.63 [Reserved]
§ 393.65All fuel systems.
§ 393.67Liquid fuel tanks.
§ 393.68Compressed natural gas fuel containers.
§ 393.69Liquefied petroleum gas systems.
§ 393.70Coupling devices and towing methods, except for driveaway-towaway operations.
§ 393.71Coupling devices and towing methods, driveaway-towaway operations.
§ 393.75Tires.
§ 393.76Sleeper berths.
§ 393.77Heaters.
§ 393.78Windshield wiping and washing systems.
§ 393.79Windshield defrosting and defogging systems.
§ 393.80Rear-vision mirrors.
§ 393.81Horn.
§ 393.82Speedometer.
§ 393.83Exhaust systems.
§ 393.84Floors.
§ 393.85§ 393.85 [Reserved]
§ 393.86Rear impact guards and rear end protection.
§ 393.87Warning flags on projecting loads.
§ 393.88Television receivers.
§ 393.89Buses, driveshaft protection.
§ 393.90Buses, standee line or bar.
§ 393.91Buses, aisle seats prohibited.
§ 393.92§ 393.92 [Reserved]
§ 393.93Seats, seat belt assemblies, and seat belt assembly anchorages.
§ 393.94Interior noise levels in power units.
§ 393.95Emergency equipment on all power units.
§ 393.100Applicability and general requirements of cargo securement standards.
§ 393.102Minimum performance criteria for cargo securement devices and systems.
§ 393.104Standards for cargo securement devices and systems.
§ 393.106General requirements for securing articles of cargo.
§ 393.108Determining the working load limit of a tiedown or the load restraining value of a friction mat.
§ 393.110Additional requirements for determining the minimum number of tiedowns.
§ 393.112Adjustability of tiedowns.
§ 393.114Requirements for front end structures used as part of a cargo securement system.
§ 393.116Specific securement requirements for logs.
§ 393.118Specific securement requirements for dressed lumber and similar building products.
§ 393.120Specific securement requirements for metal coils.
§ 393.122Specific securement requirements for paper rolls.
§ 393.124Specific securement requirements for concrete pipe.
§ 393.126Specific securement requirements for intermodal containers.
§ 393.128Specific securement requirements for automobiles, light trucks, and vans.
§ 393.130Specific securement requirements for heavy vehicles, equipment, and machinery.
§ 393.132Specific securement requirements for flattened or crushed vehicles.
§ 393.134Specific securement requirements for roll-on/roll-off and hook lift containers.
§ 393.136Specific securement requirements for large boulders.
§ 393.201Frames.
§ 393.203Cab and body components.
§ 393.205Wheels.
§ 393.207Suspension systems.
§ 393.209Steering wheel systems.