- § 393.1
Scope of the rules in this part.
- § 393.3
Additional equipment and accessories.
- § 393.5
- § 393.7
Matter incorporated by reference.
- § 393.9
Lamps operable, prohibition of obstructions of lamps and reflectors.
- § 393.11
Lamps and reflective devices.
- § 393.13
Retroreflective sheeting and reflex reflectors, requirements for semitrailers and trailers manufactured before December 1, 1993.
- § 393.17
Lamps and reflectors—combinations in driveaway-towaway operation.
- § 393.19
Hazard warning signals.
- § 393.20
- § 393.22
Combination of lighting devices and reflectors.
- § 393.23
Power supply for lamps.
- § 393.24
Requirements for head lamps, auxiliary driving lamps and front fog lamps.
- § 393.25
Requirements for lamps other than head lamps.
- § 393.26
Requirements for reflectors.
- § 393.27
- § 393.28
- § 393.29
- § 393.30
- §§ 393.31-393.33
- § 393.40
Required brake systems.
- § 393.41
Parking brake system.
- § 393.42
Brakes required on all wheels.
- § 393.43
Breakaway and emergency braking.
- § 393.44
Front brake lines, protection.
- § 393.45
Brake tubing and hoses; hose assemblies and end fittings.
- § 393.46
- § 393.47
Brake actuators, slack adjusters, linings/pads and drums/rotors.
- § 393.48
Brakes to be operative.
- § 393.49
Control valves for brakes.
- § 393.50
- § 393.51
Warning signals, air pressure and vacuum gauges.
- § 393.52
- § 393.53
Automatic brake adjusters and brake adjustment indicators.
- § 393.55
Antilock brake systems.
- § 393.60
Glazing in specified openings.
- § 393.61
Truck and truck tractor window construction.
- § 393.62
Emergency exits for buses.
- § 393.63
- § 393.65
All fuel systems.
- § 393.67
Liquid fuel tanks.
- § 393.68
Compressed natural gas fuel containers.
- § 393.69
Liquefied petroleum gas systems.
- § 393.70
Coupling devices and towing methods, except for driveaway-towaway operations.
- § 393.71
Coupling devices and towing methods, driveaway-towaway operations.
- § 393.75
- § 393.76
- § 393.77
- § 393.78
Windshield wiping and washing systems.
- § 393.79
Windshield defrosting and defogging systems.
- § 393.80
- § 393.81
- § 393.82
- § 393.83
- § 393.84
- § 393.85
- § 393.86
Rear impact guards and rear end protection.
- § 393.87
Warning flags on projecting loads.
- § 393.88
- § 393.89
Buses, driveshaft protection.
- § 393.90
Buses, standee line or bar.
- § 393.91
Buses, aisle seats prohibited.
- § 393.92
- § 393.93
Seats, seat belt assemblies, and seat belt assembly anchorages.
- § 393.94
Interior noise levels in power units.
- § 393.95
Emergency equipment on all power units.
- § 393.100
Which types of commercial motor vehicles are subject to the cargo securement standards of this subpart, and what general requirements apply?
- § 393.102
What are the minimum performance criteria for cargo securement devices and systems?
- § 393.104
What standards must cargo securement devices and systems meet in order to satisfy the requirements of this subpart?
- § 393.106
What are the general requirements for securing articles of cargo?
- § 393.108
How is the working load limit of a tiedown, or the load restraining value of a friction mat, determined?
- § 393.110
What else do I have to do to determine the minimum number of tiedowns?
- § 393.112
Must a tiedown be adjustable?
- § 393.114
What are the requirements for front end structures used as part of a cargo securement system?
- § 393.116
What are the rules for securing logs?
- § 393.118
What are the rules for securing dressed lumber or similar building products?
- § 393.120
What are the rules for securing metal coils?
- § 393.122
What are the rules for securing paper rolls?
- § 393.124
What are the rules for securing concrete pipe?
- § 393.126
What are the rules for securing intermodal containers?
- § 393.128
What are the rules for securing automobiles, light trucks and vans?
- § 393.130
What are the rules for securing heavy vehicles, equipment and machinery?
- § 393.132
What are the rules for securing flattened or crushed vehicles?
- § 393.134
What are the rules for securing roll-on/roll-off or hook lift containers?
- § 393.136
What are the rules for securing large boulders?
- § 393.201
- § 393.203
Cab and body components.
- § 393.205
- § 393.207
- § 393.209
Steering wheel systems.
PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION
§ 393.110: What else do I have to do to determine the minimum number of tiedowns?
(a) When tiedowns are used as part of a cargo securement system, the minimum number of tiedowns required to secure an article or group of articles against movement depends on the length of the article(s) being secured, and the requirements of paragraphs (b) and (c) of this section. These requirements are in addition to the rules under § 393.106.
(b) When an article is not blocked or positioned to prevent movement in the forward direction by a headerboard, bulkhead, other cargo that is positioned to prevent movement, or other appropriate blocking devices, it must be secured by at least:
(1) One tiedown for articles 5 feet (1.52 meters) or less in length, and 1,100 pounds (500 kg) or less in weight;
(2) Two tiedowns if the article is:
(i) 5 feet (1.52 meters) or less in length and more than 1,100 pounds (500 kg) in weight; or
(ii) Longer than 5 feet (1.52 meters) but less than or equal to 10 feet (3.04 meters) in length, irrespective of the weight.
(3) Two tiedowns if the article is longer than 10 feet (3.04 meters), and one additional tiedown for every 10 feet (3.04 meters) of article length, or fraction thereof, beyond the first 10 feet (3.04 meters) of length.
(c) If an individual article is blocked, braced, or immobilized to prevent movement in the forward direction by a headerboard, bulkhead, other articles which are adequately secured or by an appropriate blocking or immobilization method, it must be secured by at least one tiedown for every 3.04 meters (10 feet) of article length, or fraction thereof.
(d) Special rule for special purpose vehicles. The rules in this section do not apply to a vehicle transporting one or more articles of cargo such as, but not limited to, machinery or fabricated structural items (e.g., steel or concrete beams, crane booms, girders, and trusses, etc.) which, because of their design, size, shape, or weight, must be fastened by special methods. However, any article of cargo carried on that vehicle must be securely and adequately fastened to the vehicle.
Although we make every effort to assure that the information we provide is complete and accurate, it is not intended to take the place of published agency regulations. Regulations issued by the U.S. Department of Transportation and its Operating Administrations are published in the Federal Register and compiled in the U.S. Code of Federal Regulations (CFR). Copies of appropriate volumes of the CFR in book format may be purchased from the Superintendent of Documents, U.S. Government Printing Office, or examined at many libraries.
The CFR may also be viewed online at http://ECFR.gpoaccess.gov.