Practice question Is a driver who holds only Category D1 allowed to drive a motorcycle? Yes, D1 includes all two-wheel categoriesYes, but only mopeds with a sidecarNoYes, if the motorcycle engine is under 125 cc Answer: C — No The correct answer is shown above. Try the full quiz for additional practice. Practice more: Bulgaria Theory Test D Practice Questions - Bulgaria Category D Driving Licence Theory Test (Bus) Exam →