This SAE Standard applies to all new production air brake reservoirs used in automotive vehicles and off-road machines. This document defines an "air brake reservoir" as a reservoir having single or multiple compartments that is used for storage of compressed air. This document does not apply to accumulators or reservoirs for storage of gases other than compressed air. The reservoirs tested per these requirements shall be selected from production stock and shall be equipped with all permanently attached items such as mounting brackets and fitting bosses.