| 1. | Road vehicles . legs for semi - trailers . functional characteristics 半挂车支架.功能特性 |
| 2. | Motor vehicles - fifth wheel coupling pins - strength test 汽车半挂车牵引座牵引销强度试验 |
| 3. | Terms and marks in special automobiles and semi - trailers 专用汽车和专用半挂车术语和代号 |
| 4. | Technical requirements for freight semitrailer 货运半挂车通用技术条件 |
| 5. | Trailers and semi - trailers . air - pressure braking connections 挂车和半挂车.气压制动连接件 |
| 6. | Upper coupler kingpin - commercial trailers and semitrailers 商用挂车和半挂车的上部车钩主销 |
| 7. | Rear tractor clearance radius of semi - trailer 半挂车间隙半径 |
| 8. | Shapes and dimensions of fifth wheel coupling pins for semi - trailers 半挂车用试验专用轮联接销的形状和尺寸 |
| 9. | Front fitting radius of semi trailer 半挂车前回转半径 |
| 10. | Specification for dimensions of ' 50 ' fifth wheel king pin for semi - trailers 半挂车第五轮大号销钉" 50 "尺寸规范 |