[Category] C [Description] Motor vehicles, other than those in category D, having a permissible maximum mass exceeding 3,500 kg; or motor vehicles of category С coupled to a trailer the permissible maximum mass of which does not exceed 750 kg [Category_2] C1 [Description_3] 
Motor vehicles, with the exception of those in category D, the permissible maximum mass of which exceeds 3,500 kg but does not exceed 7,500 kg; or motor vehicles of subcategory C1 coupled to a trailer, the permissible maximum mass of which does not exceed 750 kg