Can an owner of a valid driver’s license for a particular group of vehicle drive any vehicle of the same group?

1. Correct answer: Yes, provided that the driver can operate and use it proficiently
2. Yes, holder of a valid driver’s license can drive any vehicle, unconditionally
3. Yes, provided that he holds a police certificate, testifying that he can operate the vehicle proficiently
4. Yes, provided that he had not been found guilty of any traffic offence

WhyA license for a category lets you drive any vehicle in that category, provided you can handle it. No manufacturer's certificate is needed.