Convention on Road Traffic

ANNEXES

Annex 5

TECHNICAL CONDITIONS CONCERNING MOTOR VEHICLES AND TRAILERS

1. Without prejudice to the provisions of Article 3, paragraph 2 (a) and Article 39, paragraph 1 of this Convention any Contracting Party may, with respect to motor vehicles which it registers and to trailers which it allows on the road under its domestic legislation, lay down rules which supplement, or are stricter than, the provisions of this annex. All vehicles in international traffic must meet the technical requirements in force in their country of registration when they first entered into service.

2. For the purposes of this Annex, the term "trailer" applies only to a trailer designed to be coupled to a motor vehicle.

3. Contracting Parties which, in conformity with Article 1, subparagraph (n), of this Convention, have declared that they wish to treat as motor cycles three-wheeled vehicles the unladen mass of which does not exceed 400 kg, shall make such vehicles subject to the rules laid down in this Annex either for motor cycles or for other motor vehicles.

CHAPTER I

Braking

4. For the purposes of this chapter:

(a) The term "wheels of one axle" means wheels which are arranged symmetrically, or largely symmetrically, in relation to the vehicle's median longitudinal plane, even if they are not placed on the same axle (a tandem axle is counted as two axles);

(b) The term "service brake" means the device normally used to slow down and stop the vehicle;

(c) The term "parking brake" means the device used to hold the vehicle stationary in the driver's absence, or, in the case of trailers, when the trailer is uncoupled;

(d) The term "secondary (emergency) brake" means the device designed to slow down and stop the vehicle in the event of failure of the service brake.

A. Braking of motor vehicles other than motor cycles

5. Every motor vehicle other than a motor cycle shall have brakes which can be easily operated by the driver when in his driving position. These brakes shall be capable of performing the following three braking functions:

(a) A service brake capable of slowing down the vehicle and of stopping it safely, rapidly and effectively, whatever its conditions of loading and whatever the upward or downward gradient of the road on which it is moving;

(b) A parking brake capable of holding the vehicle stationary, whatever its conditions of loading, on a noticeable upward or downward gradient, the operative surfaces of the brake being held in the braking position by a device whose action is purely mechanical;

(c) A secondary (emergency) brake capable of slowing down and stopping the vehicle, whatever its conditions of loading, within a reasonable distance, even in the event of failure of the service brake.

6. Subject to the provisions of paragraph 5 of this Annex, the devices providing the three braking functions (service brake, secondary brake and parking brake) may have parts in common; combination of the controls shall be permitted only on condition that at least two separate controls remain.

7. The service brake shall act on all the wheels of the vehicle.

8. The secondary (emergency) brake shall be capable of acting on at least one wheel on each side of the vehicle's median longitudinal plane; the same provision shall apply to the parking brake.

9. The service brake and the parking brake shall act on braking surfaces permanently connected to the wheels through components of adequate strength.

10. No braking surface shall be capable of being disconnected from the wheels. Nevertheless, such disconnection shall be permitted in the case of some of the braking surfaces, on condition:

(a) That it is only momentary, as for example, during a change of gear;

(b) That so far as concerns the parking brake, it can be effected only by the action of the driver; and

(c) That so far as concerns the service or secondary (emergency) brake, braking remains possible with the efficiency prescribed in the paragraph 5 of this Annex.

10-bis. All vehicle equipment contributing to braking shall be so designed and constructed that the efficacy of the service brake is ensured after prolonged and repeated use.

10-ter. The service braking action shall be properly distributed and synchronized among the various axles of the vehicle.

10-quater. If the control of the service brake is assisted, partially or totally, by an energy source other than the muscular energy of the driver, it shall be possible to stop the vehicle within a reasonable distance even in the event of the failure of the energy source.

B. Braking of trailers

11. Without prejudice to the provisions of paragraph 17 (c) of this Annex, every trailer, with the exception of a light trailer, shall have brakes as follows:

(a) A service brake capable of slowing down the vehicle and of stopping it safely, rapidly and effectively, whatever its conditions of loading and whatever the upward or downward gradient of the road on which it is moving;

(b) A parking brake capable of holding the vehicle stationary, whatever its conditions of loading, on a noticeable upward or downward gradient, the operative surfaces of the brake being held in the braking position by a device whose action is purely mechanical. This provision shall not apply to trailers which cannot be uncoupled from the drawing vehicle without the use of tools, provided that the requirements for parking brakes are satisfied for the combination of vehicles.

12. The devices providing the two braking functions (service and parking) may have parts in common.

13. The service brake shall act on all the wheels of the trailer. The braking action shall be properly distributed and synchronized among the various axles of the trailer.

14. The service brake shall be capable of being brought into action by the service brake control of the drawing vehicle; if, however, the permissible maximum mass of the trailer does not exceed 3,500 kg, the brakes may be such as to be brought into action, while the trailer is in motion, only by the trailer moving up on the drawing vehicle (overrun braking).

15. The service brake and the parking brake shall act on braking surfaces permanently connected to the wheels through components of adequate strength.

16. The braking devices shall be such that the trailer is stopped automatically if the coupling device breaks while the trailer is in motion. This requirement shall not apply, however, to trailers with only one axle or with two axles less than 1 m apart, provided that their permissible maximum mass does not exceed 1,500 kg and, except for semi-trailers, that they are fitted, in addition to the coupling device, with a secondary attachment.

C. Braking of combinations of vehicles

17. In addition to the provisions of parts A and B of this Chapter relating to separate vehicles (motor vehicles and trailers), the following provisions shall apply to combinations of such vehicles:

(a) The braking devices on each of the component vehicles shall be compatible;

(b) The service braking action shall be properly distributed and synchronized between the various axles of the combination;

(c) The permissible maximum mass of a trailer without a service brake shall not exceed half of the sum of the unladen mass of the drawing vehicle and the mass of the driver.

D. Braking of motor cycles

18. (a) Every motor cycle shall be equipped with two brakes, one of which acts at least on the rear wheel or wheels and the other at least on the front wheel or wheels; if a side-car is attached to a motor cycle, braking of the side-car wheel shall not be required. These braking devices shall be capable of slowing down the motor cycle and of stopping it safely, rapidly and effectively, whatever its conditions of loading and whatever the upward or downward gradient of the road on which it is moving.

(b) In addition to the provisions of subparagraph (a) of this paragraph, motor cycles having three wheels symmetrically arranged in relation to the vehicle's median longitudinal plane shall be equipped with a parking brake that fulfils the conditions stated in paragraph 5 (b) of this Annex.

CHAPTER II

Vehicle lighting and light-signalling devices

19. For the purposes of this chapter, the term:

“Driving lamp" means the lamp used to illuminate the road over a long distance ahead of the vehicle;

"Passing lamp" means the lamp used to illuminate the road ahead of the vehicle without causing undue dazzle or inconvenience to oncoming drivers and other road-users;

"Front position lamp" means the lamp used to indicate the presence and the width of the vehicle when viewed from the front;

"Rear position lamp" means the lamp used to indicate the presence and the width of the vehicle when viewed from the rear;

"Stop lamp" means the lamp used to indicate to other road-users to the rear of the vehicle that the driver is applying the service brake;

"Front fog lamp" means the lamp used to improve the illumination of the road in case of thick fog, falling snow, heavy rain or similar conditions;

"Rear fog lamp" means the lamp used to make the vehicle more visible from the rear in case of thick fog, falling snow, heavy rain or similar conditions;

"Reversing lamp" means the lamp used to illuminate the road to the rear of the vehicle and provide a warning signal to other road-users that the vehicle is reversing or about to reverse;

"Direction-indicator lamp" means the lamp used to indicate to other road-users that the driver intends to change direction to the right or to the left;

"Parking lamp" means the lamp used to indicate the presence of a parked vehicle; it may replace the front and rear position lamps;

"Marker lamp" means the lamp positioned near the outer edge of the overall width and as near as possible to the top of the vehicle for the purpose of clearly indicating the overall width. This signal complements the position lamps for some motor vehicles and trailers by drawing particular attention to their size;

"Hazard warning signal" means the signal given by the simultaneous functioning of all the direction-indicator lamps;

"Side lamp" means the lamp installed on the side of the vehicle so as to indicate its presence when viewed from the side;

"Special warning lamp" means the lamp intended to indicate either priority vehicles or a vehicle or a group of vehicles whose presence on the road requires other road-users to take special precautions, in particular, convoys of vehicles, vehicles of exceptional size and road construction or maintenance vehicles or equipment;

"Rear registration plate illuminating device" means the device ensuring the illumination of the rear registration plate; it may be made up of several optical elements;

"Daytime (running) lamp" means a lamp intended to improve the daytime conspicuity and visibility of the front of a vehicle in running use;

"Reflex-reflector" means a device used to indicate the presence of a vehicle by reflection of light emanating from a light source unconnected with that vehicle;

"Illuminating surface" means the orthogonal projection, in a transverse vertical plane, of the effective surface from which the light is emitted. For a reflex-reflector, the effective surface is the visible surface of the reflex-reflecting optical unit.

20. The colours of lights mentioned in this chapter should, as far as possible, be in accordance with the definitions given in the appendix to this Annex.

21. With the exception of motor cycles, every motor vehicle capable of exceeding 40 km (25 miles) per hour on level road shall be equipped in front with an even number of white or selective-yellow driving lamps capable of adequately illuminating the road at night in clear weather. The outer edges of the illuminating surfaces of the driving lamps shall in no case be closer to the extreme outer edge of the vehicle than the outer edges of the illuminating surfaces of the passing lamps.

22. With the exception of motor cycles, every motor vehicle capable of exceeding 10 km (6 miles) per hour on level road shall be equipped in front with an even number of white or selective-yellow passing lamps capable of adequately illuminating the road at night in clear weather. A motor vehicle shall be equipped with a device such that no more than two passing lamps may be lit simultaneously. Passing lamps shall be so adjusted as to comply with the definition in paragraph 19 of this Annex.

23. Every motor vehicle other than a two-wheeled motor cycle without side-car shall be equipped in front with two white front position lamps; however, selective yellow shall be permitted for front position lamps incorporated in driving lamps or passing lamps which emit a selective-yellow beam. These front position lamps, when they are the only lamps switched on at the front of the vehicle, shall be visible at night in clear weather without causing undue dazzle or inconvenience to other road-users;

24. (a) Every motor vehicle other than a two-wheeled motor cycle without side-car shall be equipped at the rear with an even number of red rear position lamps visible at night in clear weather without causing undue dazzle or inconvenience to other road-users;

(b) Every trailer shall be equipped at the rear with an even number of red rear position lamps visible at night in clear weather without causing undue dazzle or inconvenience to other road-users. It shall, however, be permissible for a trailer whose overall width does not exceed 0.80 m to be equipped with only one such lamp if the trailer is coupled to a two-wheeled motor cycle without side-car.

25. Every motor vehicle or trailer displaying a registration number at the rear shall be equipped with a lighting device such that the number is legible at night in clear weather.

26. The electrical connections on all motor vehicles (including motor cycles) and on all combinations consisting of a motor vehicle and one or more trailers shall be such that the driving lamps, passing lamps, front fog lamps and front position lamps of the motor vehicle and the lighting device referred to in paragraph 25 above cannot be switched on unless the rearmost rear position lamps of the motor vehicle or combination of vehicles are switched on as well.

Rear fog lamps shall be able to be switched on only if the driving lamps, the passing lamps or the front fog lamps are switched on.

However, this provision shall not apply to driving lamps or passing lamps when they are used to give the luminous warning referred to in Article 32, paragraph 3, of this Convention. In addition, the electrical connections shall be such that the front position lamps of the motor vehicle are always switched on when the passing lamps, driving lamps or fog lamps are on.

27. Every motor vehicle other than two-wheeled motor cycle without side-car shall be equipped at the rear with at least two red reflex-reflectors of other than triangular form. When illuminated by the driving, passing or fog lamps of another vehicle, the reflex-reflectors shall be visible to the driver of that vehicle at night in clear weather.

28. Every trailer shall be equipped at the rear with at least two red reflex-reflectors. These reflex-reflectors shall have the shape of an equilateral triangle with one vertex uppermost and one side horizontal. No signal lamp shall be placed inside the triangle. These reflex-reflectors shall meet the requirements for visibility laid down in paragraph 27 above. However, trailers with an overall width not exceeding 0.80 m may be equipped with only one reflex-reflector if they are coupled to a two-wheeled motor cycle without side-car.

29. Every trailer shall be equipped at the front with two white reflex-reflectors of other than triangular form. These reflex-reflectors shall meet the visibility requirements laid down in paragraph 27 above.

30. A trailer shall be equipped at the front with two white front position lamps if its width exceeds 1.60 m. The front position lamps thus prescribed shall be fitted as near as possible to the extreme outer edge of the trailer.

31. With the exception of two-wheeled motor cycles with or without side-car, every motor vehicle capable of exceeding 25 km (15 miles) per hour on a level road shall be equipped at the rear with at least two red stop lamps, the luminous intensity of which is markedly higher than that of the rear position lamps. The same provision shall apply to every trailer which is the last vehicle in a combination of vehicles.

32. Subject to the possibility that exemption from all or some of these obligations may be granted in respect of mopeds by Contracting Parties which, in conformity with Article 54, paragraph 2, of the Convention, have declared that they treat mopeds as motor cycles:

(a) Every two-wheeled motor cycle with or without side-car shall be equipped with one or two passing lamps satisfying the conditions regarding colour and visibility laid down in paragraph 22 above;

(b) Every two-wheeled motor cycle with or without side-car capable of exceeding 40 km (25 miles) per hour on a level road shall be equipped, in addition to the passing lamp, with at least one driving lamp satisfying the conditions regarding colour and visibility laid down in paragraph 21 above. If such a motor cycle has more than one driving lamp, these lamps shall be situated as close together as possible.

33. Every two-wheeled motor cycle without side-car may be equipped at the front with one or two front position (side) lamps satisfying the conditions regarding colour and visibility laid down in paragraph 23 above. If such a motor cycle has two front position (side) lamps, these lamps shall be situated as close together as possible.

34. Every two-wheeled motor cycle without side-car shall be equipped at the rear with one rear position side lamp satisfying the conditions regarding colour and visibility laid down in paragraph 24 (a) above.

35. Every two-wheeled motor cycle without side-car shall be equipped at the rear with a non-triangular reflex-reflector satisfying the conditions regarding colour and visibility laid down in paragraph 27 above.

36. Subject to the possibility for Contracting Parties which, in conformity with Article 54, paragraph 2, have declared that they treat mopeds as motor cycles, to exempt two-wheeled mopeds with or without side-cars from this obligation, every two-wheeled motor cycle with or without side-car shall be equipped with a stop lamp conforming to the provisions of paragraph 31 above.

37. Without prejudice to the provisions concerning lamps and devices prescribed for two-wheeled motor cycles without side-car, any side-car attached to a two-wheeled motor cycle shall be equipped at the front with a front position (side) lamp satisfying the conditions regarding colour and visibility laid down in paragraph 23 above, and at the rear with a rear position (side) lamp satisfying the conditions regarding colour and visibility laid down in paragraph 24 (a) above and with a reflex-reflector satisfying the conditions regarding colour and visibility laid down in paragraph 27 above. The electrical connections shall be such that the front position (side) lamp and rear position (side) lamp of the side-car are switched on at the same time as the rear position (side) lamp of the motor cycle.

38. Motor vehicles with three wheels placed symmetrically in relation to the vehicle's median longitudinal plane, which are treated as motor cycles pursuant to Article 1, subparagraph (n), of the Convention, shall be equipped with the devices prescribed in paragraphs 21, 22, 23, 24 (a), 27 and 31 above. However, on an electric vehicle the width of which does not exceed 1.30 m and the speed of which does not exceed 40 km (25 miles) per hour a single driving lamp and a single passing lamp are sufficient.

39. Every motor vehicle, except a moped, and every trailer shall be equipped with fixed direction-indicators with flashing amber lights, fitted on the vehicle in even numbers and visible by day and by night to road-users affected by the vehicle's movements.

40. If front fog lamps are fitted on a motor vehicle they shall emit white or selective-yellow light, be two or, in the case of motor cycle, one in number and be placed in such a way that no point on their illuminating surface is above the highest point on the illuminating surface of the passing lamps.

41. No reversing lamp shall cause undue dazzle or inconvenience to other road-users. If reversing lamps are fitted on a motor vehicle they shall emit white or selective-yellow light. These lamps shall be lit only when the reverse gear is engaged.

42. No lamps, other than direction-indicator lamps and special warning lamps, shall emit a winking or flashing light. Side lamps may wink at the same time as direction-indicator lamps.

42-bis. Special warning lamps shall emit a winking or flashing light. Colours of these lights should conform to the provisions of Article 32, paragraph 14.

42-ter. Every motor vehicle except motor cycles and every trailer shall be so equipped that they can emit a hazard warning signal.

42-quater. If rear fog lamps are fitted on a motor vehicle or a trailer they shall be red.

42-quinquies. Every motor vehicle and every trailer more than 6 m long shall be fitted with amber side reflex-reflectors.

42-sexties. Every motor vehicle and trailer more than 1.80 m wide may be fitted with marker lamps. Such lamps shall be mandatory if the width of a motor vehicle or trailer exceeds 2.10 m. If these lamps are used, there shall be at least two of them and they shall emit white or amber light towards the front and red light towards the rear.

42-septies. Every motor vehicle and trailer may be fitted with side lamps. If such lamps are fitted they shall emit amber light.

43. For the purposes of the provisions of this Annex:

(a) Any combination of two or more lamps, whether identical or not, but having the same function and the same colour of light, shall be deemed to be a single lamp;

(b) A single illuminating surface in the shape of a band shall be deemed to be two or an even number of lamps if it is placed symmetrically to the median longitudinal plane of the vehicle. The illumination of such a surface shall be provided by at least two light sources placed as close as possible to its ends.

44. Lamps on a given vehicle having the same function and facing in the same direction, shall be of the same colour. Lamps and reflex-reflectors which are of even number shall be placed symmetrically in relation to the vehicle's median longitudinal plane, except on vehicles with an asymmetrical external shape. The intensity of the lamps in each pair shall be substantially the same.

45. Lamps of different kinds, and, subject to the provisions of other paragraphs of this Chapter, lamps and reflex-reflectors, may be grouped or incorporated in the same device, provided that each of these lamps and reflectors complies with the applicable provisions of this Annex.

CHAPTER III

Other requirements

Steering mechanism

46. Every motor vehicle shall be equipped with a strong steering mechanism which will allow the driver to change the direction of the vehicle, easily, quickly and surely.

Driving (rear-view) mirror

47. Every motor vehicle shall be equipped with one or more driving (rear-view) mirrors; the number, dimensions and arrangement of these mirrors shall be such as to enable the driver to see the traffic to the rear of his vehicle.

Audible warning device

48. Every motor vehicle shall be equipped with at least one audible warning device of sufficient power. The sound emitted by the warning device shall be continuous and uniform, but not strident. Priority vehicles and public passenger-transport vehicles may have additional audible warning devices which are not subject to these requirements.

Windscreen-wiper

49. Every motor vehicle having a windscreen of such dimensions and shape that the driver cannot normally see the road ahead from his driving position except through the transparent part of the windscreen, shall be equipped with at least one efficient and strongly built windscreen-wiper in an appropriate position, the functioning of which does not require constant action by the driver.

Windscreen-washer

50. Every motor vehicle required to be equipped with at least one windscreen-wiper shall also be equipped with a windscreen washer.

Windscreen and windows

51. On all motor vehicles and on all trailers:

(a) Transparent substances forming part of the vehicle's body-work, including the windscreen and any interior partition, shall be such that in case of breakage, the risk of physical injury will be minimized;

(b) The transparent parts of the windscreen shall be made of a substance whose transparency does not deteriorate; they shall be such that they do not cause any appreciable distortion of objects seen through the windscreen, and that, in case of breakage, the driver still has a sufficiently clear view of the road.

Reversing device

52. Every motor vehicle shall be equipped with a reversing device controlled from the driving position. This device shall not, however, be compulsory on motor cycles or on motor vehicles having three wheels arranged symmetrically in relation to the vehicle's median longitudinal plane unless their permissible maximum mass exceeds 400 kg.

Exhaust silencer

53. Every internal combustion engine used for propelling a motor vehicle shall be equipped with an efficient exhaust silencer.

Tyres

54. The wheels of motor vehicles and of their trailers shall be fitted with pneumatic tyres ensuring a good adhesion, even on a wet road. This provision shall not, however, prevent Contracting Parties from authorizing the use of devices producing results at least equivalent to those obtained with pneumatic tyres.

Speedometer

55. Every motor vehicle capable of exceeding 40 km (25 miles) per hour on a level road shall be equipped with a speedometer; Contracting Parties may, however, exempt certain categories of motor cycles and other light vehicles from this requirement.

Warning device to be carried on motor vehicles

56. The device referred to in Article 23, paragraph 5, of this Convention, and in paragraph 6 of Annex 1 thereto shall be either:

(a) A signplate consisting of an equilateral triangle with a red border and with its interior part either hollow or of a light colour; the red border shall be fitted with a reflectorized strip. It may also have a red fluorescent area and/or be illuminated by transparency; the signplate shall be such that it can be stood firmly in a vertical position; or

(b) Some other equally effective device, prescribed by the legislation of the country in which the vehicle is registered.

Anti-theft device

57. Every motor vehicle shall be fitted with an anti-theft device by means of which one of its essential components can be put out of action or blocked when the vehicle is parked.

Restraining devices

58. Wherever technically practicable all forward-facing seats of vehicles of category B as referred to in Annexes 6 and 7 of this Convention, with the exception of vehicles constructed or used for special purposes as defined by domestic legislation, shall be equipped with approved safety belts or similarly effective approved devices.

General provisions

59. (a) The mechanical parts and equipment of a motor vehicle shall not, so far as this can possibly be avoided, give rise to any danger of fire or explosion; nor shall they cause excessive emission of noxious gases, opaque fumes, smells or noise.

(b) So far as possible, the high tension ignition device of a motor vehicle shall not cause excessive radio interference.

(c) Every motor vehicle shall be so constructed that the driver's field of vision ahead, and to both right and left, is sufficient to enable him to drive safely.

(d) Motor vehicles and trailers shall, as far as possible, be so constructed and equipped as to reduce the danger to their occupants and to other road-users in case of accident. In particular, they shall have no ornaments or other objects, inside or outside, with unnecessary projections or ridges which may be dangerous to the occupants or other road-users.

(e) Vehicles of which the maximum permitted mass exceeds 3.5 t shall be equipped, as far as possible, with side and rear-underrun devices.

CHAPTER IV

Exemptions

60. For domestic purposes, Contracting Parties may grant exemptions from the provisions of this Annex in respect of:

(a) Motor vehicles and trailers which, by virtue of their design, cannot exceed a speed of 30 km (19 miles) per hour on a level road of whose speed is limited by domestic legislation to 30 km per hour;

(b) Invalid carriages, i.e. small motor vehicles specially designed and constructed - and not merely adapted - for use by a person suffering from some physical defect or disability and normally used by that person only;

(c) Vehicles used for experiments whose purpose is to keep up with technical progress and improve road safety;

(d) Vehicles of a special form or type, or which are used for particular purposes under special conditions;

(e) Vehicles adapted for use by handicapped persons.

61. Contracting Parties may also grant exemptions from the provisions of this Annex in respect of vehicles which they register and which may enter international traffic:

(a) By authorizing the use of the colour amber for the front position lamps of motor vehicles and trailers;

(b) As regards the position of lamps on special-purpose vehicles whose external shape is such that the said provisions could not be observed without the use of mounting devices which could easily be damaged or torn off;

(c) As regards trailers, carrying long loads (tree trunks, pipes, etc.), which are not coupled to the drawing vehicle when in movement, but merely attached to it by the load;

(d) By authorizing the emission towards the rear of white light and towards the front of red light for the following equipment:

Revolving of flashing lamps of priority vehicles;

Fixed lamps for exceptional loads;

Side lamps and reflex-reflectors;

Professional lighted signs on the roof;

(e) By authorizing the emission of blue light towards the front and towards the rear for revolving or flashing lamps;

(f) By authorizing on any side of a vehicle of a special shape or kind or used for special purposes and in special conditions, alternating red retro-reflective or fluorescent and white retro-reflective strips;

(g) By authorizing the emission towards the rear of white or coloured light reflected by figures or letters or by the background of rear registration plates, by distinctive signs or by other distinctive marks required by domestic legislation;

(h) By authorizing the use of the colour red for rearmost lateral reflex-reflectors and side lamps.

CHAPTER V

Transitional provisions

62. Motor vehicles first registered and trailers put into service in the territories of a Contracting Party before the entry into force of this Convention or within the two years following such entry into force shall not be subject to the provisions of this Annex, provided that they satisfy the requirements of parts I, II and III of Annex 6 of the 1949 Convention on Road Traffic.

62-bis. Motor vehicles first registered and trailers put into service in the territory of a Contracting Party before the entry into force of the amendments to this Convention or within the two years following such entry into force should not be subject to the provisions of this Annex, provided that they satisfy the provisions of Annex 5 of the 1968 Convention on Road Traffic in the wording prior to these amendments or other provisions referred to in Chapter V of the said Annex.

APPENDIX

DEFINITION OF COLOUR FILTERS FOR OBTAINING THE COLOURS REFERRED TO IN THIS ANNEX (TRICHROMATIC COORDINATES)

For verifying the colorimetric characteristics of these filters, a source of white light at a colour temperature of 2854°K (corresponding to illuminant A of the International Commission on Illumination [CIE]) shall be used.

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^1/ In these cases, different limits have been adopted from those recommended by the CIE, since the supply voltages at the terminals of the lamps with which the lights are fitted vary very considerably.

^2/ Applies to the colour of motor vehicle signs hitherto commonly called "orange" or orange-yellow. Corresponds to a specific part of the "yellow" zone of the triangle of CIE colours.

^3/ Applies only to passing and driving lights. In the particular case of fog-lights, the selectivity of the colour shall be considered satisfactory if the purity factor is not less than 0.820, the limit towards white y=-x+0.966, being in that case y=-x+0.940 and y=0.440.