619.1. The Government may fix, by regulation, the duties exigible for obtaining the registration of a road vehicle and the duties exigible under section 31.1, on the basis of one or more of the following factors:(1) the class or sub-class of road vehicles to which the vehicle belongs;
(2) its net mass;
(3) its number of axles;
(4) its use;
(5) the professional activity, the legal personality or the identity of its owner;
(6) the territory where it is used.