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NHTSA

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December 2013, TruckingInfo.com - Department

Two Things You Should Know About Trailer Lighting and Wiring

This LED lamp’s lens spreads light across 180 degrees of view, and its four diodes ensure sufficient candlepower throughout that wide angle to meet or exceed the federal regulations. The lamp is therefore “PC rated,” with the C meaning Combination clearance and sidemarker, and it can be mounted on the trailer’s side, though within 6 inches of its nose. (P, for Parking, is from an old industry classification that has been retained.)

By Tom Berg

Over the years, electrical failures have been the number one problem with trailers. Lighting problems have been reduced by the wider adoption of LED lighting. However, even LEDs, along with the rest of the electrical system, are subject to corrosion, which remains a major headache.

Tags: FMCSA, Trailers, LED Lighting, NHTSA

July 2013, TruckingInfo.com - Feature

Brakes: Shorter Stopping Distances, Again

Tractors with gross-weight ratings of over 59,600 pounds, like this heavy haul model, are among those affected by FMVSS 121’s requirements for shorter stopping distances.

By Tom Berg

Coming up: another “non-event” for brakes? That’s what Phase Two of new federal stopping-distance requirements will be for truck operators, according to people we talked with. Stronger, higher-performance brakes on certain vehicles won’t even cost much more in most cases. But like Phase One two years ago, which was hardly noticed by truckers, Phase Two represents a lot of work for brake makers and truck builders.

Tags: Volvo, Freightliner, Western Star, Mack Trucks, Bendix, Meritor, Brakes, Daimler Trucks North America, Air Disc Brake, Drum brakes, NHTSA

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