Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p66
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 196388–199640

to 400 mm where the overall width of the vehicle is less than 1,300 mm.
6.14.4.2.                    In height:  Above the ground, not less than 250 mm nor more than 900 mm (not more than 1,200 mm if grouped with any rear lamp(s), 1,500 mm if the shape of the bodywork makes it impossible to keep within 900 mm or 1200 mm respectively).
6.14.4.3.                    In length: at the rear of the vehicle.
6.14.5.                          Geometric visibility
Horizontal angle: 30° inwards and outwards.
                      Vertical angle: 10° above and below horizontal.
However, where a retro-reflector is mounted below 750 mm (measured according to the provisions of paragraph 5.8.1. above), the downward angle of 10° may be reduced to 5°.
6.14.6.                          Orientation
Rearwards.
6.14.7.                          Other requirements
The illuminating surface of the retro reflector may have parts in common with the apparent surface of any other lamp situated at the rear.
6.15.                                Rear retro reflector, triangular (Regulation No. 3)
6.15.1.                          Presence
Mandatory on trailers.
Prohibited on motor vehicles.
6.15.2.                          Number
Two, the performances of which shall conform to the requirements concerning Class IIIA or Class IIIB retro reflectors in Regulation No. 3. Additional retro reflecting devices and materials (including two retro-reflectors not complying with paragraph 6.15.4. below), are permitted provided they do not impair the effectiveness of the mandatory lighting and light-signalling devices.
6.15.3.                          Arrangement
The apex of the triangle shall be directed upwards.
6.15.4.                          Position
6.15.4.1.                    In width: that point on the illuminating surface, which is farthest from the vehicle's median longitudinal plane, shall not be more than 400 mm from the extreme outer edge of the vehicle.
The inner edges of the retro reflectors shall not be less than 600 mm apart. This distance may be reduced to 400 mm if the overall width of the vehicle is less than 1,300 mm.
6.15.4.2.                    In height:  Above the ground, not less than 250 mm nor more than 900 mm (not more than 1,200 mm if grouped with any rear lamp(s),1,500 mm if the shape of the bodywork makes it impossible to keep within 900 mm or 1,200 mm respectively).
6.15.4.3.                    In length: at the rear of the vehicle.
6.15.5.                          Geometric visibility
Horizontal angle: 30° inwards and outwards.
Vertical angle: 15° above and below the horizontal. However, where a retro-reflector is mounted below 750 mm (measured according to the provisions of paragraph 5.8.1. above), the downward angle of 15° may be reduced to 5°.
6.15.6.                          Orientation
Rearwards.
6.15.7.                          Other requirements
The illuminating surface of the retro-reflector may have parts in common with the apparent surface of any other lamp situated at the rear.
6.16.                                Front retro reflector, non-triangular (Regulation No. 3)
6.16.1.                          Presence
Mandatory on trailers.
Mandatory on motor vehicles having all forward facing lamps with