| 280 / | HD | LAND VEHICLES |
| 29 | DF | WHEELED {21} |
| 400 | DF | .~ Articulated vehicle {30} |
| 495 | ![]() | .~.~ Vehicle mounting or clamp {5} |
| 496 | DF | .~.~.~> Forward of leading vehicle rear axle |
| 497 | DF | .~.~.~> Vertically spaced connections of draft element to leading vehicle |
| 498 | DF | .~.~.~> Pivoted {1} |
| 500 | DF | .~.~.~> Modified bumper or noncoupling bumper clamp {2} |
| 503 | DF | .~.~.~> Axle connection |