| 280 / | HD | LAND VEHICLES |
| 29 | DF | WHEELED {21} |
| 80.1 | DF | .~ Running gear {20} |
| 771 | DF | .~.~ Occupant steered {15} |
| 93.502 | DF | .~.~.~ Linkage {7} |
| 93.507 | DF | .~.~.~.~ Idler arm {1} |
| 93.508 | ![]() | .~.~.~.~.~ Articulated joint structure {1} |
| 93.509 | DF | .~.~.~.~.~.~> Motion modifier (e.g., lash, play) |