SAE J2638_201711确立了牵引车与牵引车或鹅颈式挂车（挂车总重13608 kg（30000磅）或以下）之间牵引接口的最低性能标准和术语定义。这为挂接装置、牵引车连接结构、拖车连接结构和连接器建立了标准。

SAE J2638_201711 establishes minimum performance criteria and definition of terms for the towing interface between a towing vehicle and fifth wheel or gooseneck trailer at or below 13608 kg (30000 pounds) gross trailer weight. This establishes criteria for the hitch, tow vehicle attachment structure, trailer attachment structure, and coupler.