Preparation of documents categories:
- category "B" — tracked and wheeled machines with an engine capacity of up to 25,7 kW.
- category "C" — wheeled vehicle with an engine capacity from 25,7 to 110,3 kW.
- category "D" — wheeled vehicle with an engine capacity of over 110,3 kW.
category "E" — tracked vehicle with an engine capacity in excess of 25.7 kW.