| 180 / | HD | MOTOR VEHICLES |
| 400 | DF | STEERING GEAR {8} |
| 408 | ![]() | .~ Each wheel steerable {5} |
| 409 | DF | .~.~> Occupant steered {1} |
| 411 | DF | .~.~> Independently controlled steerable wheels |
| 412 | DF | .~.~> With electric power assist {1} |
| 414 | DF | .~.~> With fluid power assist {1} |
| 416 | DF | .~.~> With mechanical power assist |