Truck-tractor braking rules cut stopping distance

The National Highway Traffic Safety Administration (NHTSA) has finally issued long-awaited new braking standards for commercial truck tractors, mandating that a tractor-trailer traveling at 60 miles per hour must come to a complete stop in 250 feet, versus the old standard of 355 feet – a reduction of truck stopping distance of roughly 30%. For a small number of very heavy severe service tractors, the stopping distance requirement will be 310 feet under these same conditions. In addition, this final rule requires that all heavy truck tractors must stop within 235 feet when loaded to ...

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From the Print Issue

January 2010

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