Driving on motorways is prohibited for...

A)vehicles transporting dangerous goods.
B)vehicles with a trailer.
C)vehicles that are not able to reach 60 km/h on a flat surface.Correct
Motorways and dual carriageways may be used by motor vehicles capable of reaching a speed of 60 km/h on a flat surface (the minimum speed for these roads) and by special vehicles, if they can exceed that speed or if they exceed masses and dimensions and so indicated in their special authorisation.
Their use is prohibited for cycles, mopeds, vehicles for persons with reduced mobility, pedestrians, animals, animal-drawn vehicles and personal mobility vehicles. However, cyclists over 14 years of age may travel on the shoulders of dual carriageways, unless signage prohibits it.
Their use is prohibited for cycles, mopeds, vehicles for persons with reduced mobility, pedestrians, animals, animal-drawn vehicles and personal mobility vehicles. However, cyclists over 14 years of age may travel on the shoulders of dual carriageways, unless signage prohibits it.