ISO 26402:2008规定了用于农业的半挂式拖车铰接转向装置的拖拉机和拖车之间接口的尺寸和净空区。它还规定了此类铰接转向装置连接处的最大允许力。 它仅适用于ISO 24347，规定了标称直径为80mm的球型（机械）耦合装置。 它不适用于铰接转向装置接口的机械强度验证，也不适用于机械耦合装置；本国际标准不包括铰接转向装置本身的技术要求。

ISO 26402:2008 specifies the dimensions and clearance zones at the interface between tractor and trailer for articulated steering devices of semi-mounted trailers used in agriculture. It also specifies the maximum permissible forces at the connection of such articulated steering devices. It is applicable exclusively in conjunction with ISO 24347, specifying a ball-type (mechanical) coupling device of 80 mm nominal diameter. It is not applicable to the verification of the mechanical strength of the interface of the articulated steering device's interface, nor to the mechanical coupling device; this International Standard does not include technical requirements for the articulated steering device itself.