Category class C gives permisiion to drive cargo trucks which weight is over 3500 kg. With class C, the driver have a permisiion to couple the vehicle with a trailer which has weight not more than 750 kg. With class C, the driver have a permisiion to drive tractors with wheels of class Tkt.

To start the course is needed to have a certificate of psichological availability previously, legalised diploma and resident adress in Bulgaria. The minimum age to start the course is 21 years and at least 1 year experience of class B. The course includes 20 driving lessons and 4 lessons theory.