Annex 2. Registration Number and Plate of Motor Vehicles and Trailers to International Traffic

1. The registration number referred to in Article 35 and Article 36 of this Convention shall be composed either of numerals or of numerals and letters. The numerals shall be Arabic numerals and the letters shall be in capital Latin characters. Other numerals or characters may, however, be used, but if so the registration number shall be repeated in Arabic numerals and in capital Latin characters.

2. The registration number shall be so composed and displayed as to be legible in normal daylight at a distance of at least 40 m by an observer placed on the axis of the vehicle, the vehicle being stationary; Contracting Parties may, however, in respect of the vehicles they register, reduce this minimum legibility distance for motorcycles and for special categories of motor vehicle on which it would be difficult to fit registration numbers of sufficient size to be legible at 40 m.

3. When the registration number is displayed on a plate, this plate shall be flat and fixed in a vertical or nearly vertical position and at right angles to the vehicle’s median longitudinal plane. When the number is displayed or painted on the vehicle, the surface on which it is displayed or painted shall be flat and vertical, or nearly flat and vertical, and at right angles to the vehicle’s median longitudinal plane.

4. Without prejudice to the provisions of Annex 5  and Annex 3, is displayed, may be of a retroreflective material.

5. The background of the part of the registration plate on which the distinguishing sign is incorporated shall be of the same material as that used for the background of the part on which the registration number is marked..