Which vehicles cannot drive on a motorway?

Which vehicles cannot drive on a motorway?
A)Motorcycles.
B)Trucks of more than 3,500 kg.
C)Mopeds.Correct
It is prohibited to drive on motorways and dual carriageways with bicycles, mopeds, vehicles for persons with reduced mobility, animal-drawn vehicles, personal mobility vehicles, and any vehicle that does not reach the minimum speed of 60 km/h, unless it has express authorization to do so.
Notwithstanding the provisions of the previous paragraph, bicycle riders over 14 years of age may ride on the shoulders of dual carriageways, unless for justified road safety reasons it is prohibited by means of the corresponding signage. Such prohibition will be supplemented by a panel informing of the alternative route.