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Air Reservoir Capacity Performance Guide-Commercial Vehicles

This SAE Recommended Practice establishes performance guidelines for the capacity of the air reservoir systems used on trucks, towing trucks, truck-tractors, trailers, and converter dollies, with GVWRs over 10 000 lb, designed to be used on the highway in commercial operations. The purpose of this document is to establish a minimum air storage capacity for highway-type commercial vehicles which use compressed air to actuate or transmit actuation power to the foundation brakes. A vehicle's air reservoir capacity is quantified by its ability to provide a brake application pressure which is adequate to stop the vehicle within the emergency brake stopping distances specified in table II of FMVSS 121, after seven full brake applications with the air compressor disabled.