ISO 7634:2007规定了测试UN-ECE车辆制造统一决议（R.E.3）附件7中定义的O类牵引车（全挂车、半挂车和中轴挂车）运行性能要求的测试程序。这包括根据UN-ECE法规13，09系列修正本，补充1至6，安装有压缩空气制动系统（带或不带防抱死制动系统或电子控制制动系统）的车辆。不包括锁执行器的测试方法。

ISO 7634:2007 specifies the test procedures for testing the operational performance requirements of towed vehicles of Category O (full trailers, semi-trailers, and centre-axle trailers) as defined in Annex 7 of the UN-ECE Consolidated Resolution on the Construction of Vehicles (R. E. 3). This includes vehicles fitted with compressed air braking systems (with and without an antilock braking system or an electronically controlled braking system), in accordance with the UN-ECE Regulation 13, 09 series of amendments, supplements 1 to 6. Test methods covering lock actuators are not included.