The National Highway Traffic Safety Administration (NHTSA) has updated the performance test standards for motorcycle brakes, first adopted in 1972. The requirements are part of Federal Motor Vehicle Safety Standard (FMVSS) No. 122, Motorcycle Brake Systems, which applies to both two-wheeled and three-wheeled motorcycles. The revised rule includes a more-stringent dry-brake measure and new high-speed, wet-brake and heat-fade tests. The rule specifies minimum performance requirements for antilock brake systems when they are voluntarily installed on a motorcycle. The revised rule also harmonizes the U.S. standard with a global technical regulation developed in 1998.
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