National Highway Traffic Safety Administration April 24, 2009 – Federal Register Recent Federal Regulation Documents

This notice announces the publication by NHTSA of an analysis of the costs to repair and maintain the Anti-Lock Brake System (ABS) and Underride Guard (URG) on heavy tractors and trailers. Federal Motor Vehicle Safety Standards 121 and 105 mandate antilock braking systems (ABS) on all air-braked vehicles and hydraulic-braked trucks and buses with a GVWR of 10,000 pounds or greater. FMVSS Nos. 223 and 224 require underride guards (URG) meeting a strength test on trailers with a GVWR of 10,000 pounds or greater.