477. The Government may, by regulation,1° prescribe standards of manufacture, use and sale of traffic control devices;
2° prescribe the traffic rules applicable on a roadway that includes a cycle lane or path or a lane reserved for the exclusive use of a category of vehicles; such rules may derogate from the rules provided for in this chapter;
3° prescribe the standards of manufacture, use and sale of protective helmets;
4° restrict the use of certain categories or sub-categories of road vehicles;
5° notwithstanding Chapter VIII, regulate the traffic of road vehicles on a public highway or part thereof or prohibit access thereto to certain categories or sub-categories of road vehicles;
6° provide for cases where the wearing of a seat belt is not mandatory;
7° prescribe the installation and use of a safety device for children in a passenger vehicle and determine standards for the installation and use thereof.