This section of NTDA.org provides links to articles, and useful technical information resources and/or specifications such as Bridge Laws by State, Federal Size Regulations for Commercial Motor Vehicles, Federal Excise Tax, and more.
Federal Standards/Regulations: Federal Bridge Laws by State Federal Size Regulations for Commercial Motor Vehicles Federal Trailer Lighting Requirements Federal Motor Carrier Safety Administration US Domestic Equipment Restrictions ("So called 35% Rule" — Semitrailers consistent with 23 CFR 658.13(g) may operate without a permit provided the distance from the kingpin to the center of the rear axle is 46 feet or less.)
California Air Resources Board: CARB: Federal and State Statutes
Internal Revenue Service/Federal Excise Tax: IRS: Motor Fuel Excise Tax Guide (300-page .pdf) IRS: Retail Tax on Heavy Trucks, Trailers, and Tractors IRS Section 4051: Imposition of Tax on Heavy Trucks and Trailers Sold at Retail IRS: Trucking Industry Terms IRS: Fuel Tax Credits IRS Section 4051(d) Tire Credit
Regulatory Compliance/Standards: NHTSA: Trailers and Heavy Trucks Importation and Certification FAQ's NHTSA: Effectiveness of Retroreflective Tape on Heavy Trailers FMVSS 223: Rear Impact Guards SAE and NHTSA: Analysis of Maintenance and Repair Expenses for the Anti-Lock Brake System and Underride Guard for Tractors and Trailers
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