本国际标准规定了牵引车各种部件和尺寸的要求 带有后置联轴节和牵引杆拖车，以确保互换性。 注:附录B给出了车辆组合的不同配置示例；本国际标准仅适用于 B.1.1号。 本国际标准适用于尽可能多的货物商业运输的公路列车 不同种类它不包括专用或特殊组合。 它也没有规定最大总质量的限制 以及总体尺寸，通常由立法要求规定。 联轴器构成本国际标准主题的车辆不能与车辆互换 其联轴器安装在前部和下部（构成ISO 11407[1]的主题）。

This International Standard specifies the requirements for the various elements and dimensions of towing vehicles with rear-mounted coupling and of drawbar trailers, to ensure interchangeability. NOTE Annex B gives examples of different configurations of vehicle combinations; this International Standard deals only with No. B.1.1. This International Standard is applicable to road trains for commercial transport of cargo of the greatest possible variety; it does not cover dedicated or special combinations. Nor does it specify limitations of maximum gross mass and overall dimensions, which are generally laid down by legislative requirements. Vehicles whose couplings form the subject of this International Standard are not interchangeable with vehicles whose couplings are mounted forward and below (which form the subject of ISO 11407 [1]).