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 retroreflective 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.