(a) undertakings engaged in the occupation of road haulage operator solely by means of motor vehicles or combinations of vehicles the permissible laden mass of which does not exceed 3,5 tonnes. Member States may, however, lower this limit for all or some categories of road transport operations; (b) undertakings engaged in road passenger transport services exclusively for non-commercial purposes or which have a main occupation other than that of road passenger transport operator; (c) undertakings engaged in the occupation of road transport operator solely by means of motor vehicles with a maximum authorised speed not exceeding 40 km/h.
(a) the nature of the goods carried; or (b) the short distances involved.