| 280 / | HD | LAND VEHICLES |
| * | DD | WHEELED {1} |
| * | | .~ Running gear {6} |
| * | DD | .~.~> Occupant steered {3} |
| FOR 129 | DF | .~.~> Swinging axle and rocking (280/109) {1} |
| FOR 131 | DF | .~.~> Rocking (280/111) {1} |
| FOR 134 | DF | .~.~> Swinging axle (280/113) {4} |
| FOR 145 | DF | .~.~> Suspension means (280/688) {8} |
| FOR 184 | DF | .~.~> Swinging axle connections (280/125) {6} |