| 1/00 | Vehicles for use both on rail and on road; Conversions therefor |
| 1/02 | Vehicles for use both on rail and on road; Conversions therefor with rail and road wheels on the same axle |
| 1/04 | Vehicles for use both on rail and on road; Conversions therefor with rail and road wheels on different axles |
| 3/00 | Amphibious vehicles, i.e. vehicles capable of travelling both on land and on water; Land vehicles capable of travelling under water (buoyant wheels B60B) |
| 5/00 | Other vehicles capable of travelling in or on different media (vehicles having alternatively-usable runners and wheels B62B 13/18; flying-boats or seaplanes B64C 35/00) |
| 5/02 | Other vehicles capable of travelling in or on different media (vehicles having alternatively-usable runners and wheels B62B 13/18; flying-boats or seaplanes B64C 35/00) convertible into aircraft |