1. The official catalogue of road signs must comply with the provisions of international regulations and recommendations in this area, as well as with the basic regulations established for this purpose by the Ministries of the Interior and Development.
2. The catalogue specifies the form and meaning of the signs and, where appropriate, their colour and design, as well as their dimensions and placement systems.
3. The signs that can be used on the roads subject to the legislation on traffic, motor vehicle traffic and road safety must comply with the standards and specifications established in this regulation and in the official catalogue of traffic signs.
4. The form, symbols and nomenclature of the signs, as well as the documents that make up the official catalogue of traffic signs, are those listed in Annex I.