本规范涵盖M900系列油轮、散货自卸半挂车；加油汽车半挂车；以及燃油分配、飞机半挂车的起落架/起落架。这些半挂车在主要和次要道路以及有限的越野地形上行驶。

This specification covers the M900 series tankers, bulkhaul self-load/unload semitrailer; fuel dispensing automotive semitrailer; and fuel dispensing, underwing/overwing aircraft semitrailer. These semitrailers travel over primary and secondary roads and over limited cross-country terrain.