| 280 / | HD | LAND VEHICLES |
| 29 | DF | WHEELED {21} |
| 80.1 | DF | .~ Running gear {20} |
| 124.1 | DF | .~.~ Suspension arrangement {11} |
| 124.125 | DF | .~.~.~ Wheel separately supported upon individual stub axle (e.g., skein, spindle) {6} |
| 124.153 | ![]() | .~.~.~.~ Longitudinal control arm (i.e., suspension arm) |