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ECE regulation for retro-reflector (3) Installation

Jun 29.2020

Installation

a.Rear retro-reflector (non-triangular)

Presence

Mandatory on motor vehicles.

Provided that they are grouped together with the other rear light-signalling devices, optional on trailers.

Number

Two, the performances of which shall conform to the requirements concerning Class IA or IB retro-reflectors.

Position

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 distance between the inner edges of the two apparent surfaces in the direction of the reference axes shall: For M 1 and N 1 category vehicles: have no special requirement;

For all other categories of vehicles: be not less than 600 mm.

This distance may be reduced to 400 mm where the overall width of the vehicle is less than 1,300 mm.

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).

In length: at the rear of the vehicle.

Geometric visibility

Horizontal angle: 30° inwards and outwards.

Vertical angle: 10° above and below horizontal. The vertical angle below the horizontal may be reduced to 5° in the case of a retro-reflector less than 750 mm above the ground.

Orientation Rearwards.

 

b.Rear retro-reflector (triangular)

Presence

Mandatory on trailers. Prohibited on motor vehicles.

Number

Two, the performances of which shall conform to the requirements concerning Class IIIA or Class IIIB retro-reflectors.

Position

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.

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).

In length: at the rear of the vehicle.

Geometric visibility

Horizontal angle: 30° inwards and outwards.

Vertical angle: 15° above and below the horizontal. The vertical angle below the horizontal may be reduced to 5° in the case of a retro-reflector less than 750 mm above the ground.

Orientation Rearwards.

 

c.Front retro-reflector (non-triangular)

Presence

Mandatory on trailers.

Mandatory on motor vehicles having all forward facing lamps with reflectors concealable.

Optional on other motor vehicles.

Number

Two, the performances of which shall conform to the requirements concerning Class IA or IB retro-reflectors. Additional retro-reflecting devices and materials, are permitted provided they do not impair the effectiveness of the mandatory lighting and light-signalling devices.

Position

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.

In the case of a trailer, the point of the illuminating surface which is farthest from the vehicle's median longitudinal plane shall not be farther than 150 mm from the extreme outer edge of the vehicle.

The distance between the inner edges of the two apparent surfaces in the direction of the reference axes shall:

For M 1 and N 1 category vehicles: have no special requirement;

For all other categories of vehicles: be not less than 600 mm. This distance may be reduced to 400 mm where the overall width of the vehicle is less than 1,300 mm.

In height: above the ground, not less than 250 mm nor more than 900 mm (1,500 mm if the shape of the bodywork makes it impossible to keep within 900 mm).

In length: at the front of the vehicle.

Geometric visibility

Horizontal angle, 30° inwards and outwards. In the case of trailers, the angle inwards may be reduced to 10°. If because of the construction of the trailers this angle cannot be met by the mandatory retro-reflectors, then additional (supplementary) retro-reflectors shall be fitted, without the width limitation, which shall, in conjunction with the mandatory retro-reflectors, give the necessary visibility angle. Vertical angle: 10° above and below the horizontal. The vertical angle below the horizontal may be reduced to 5° in the case of a retro-reflector less than 750 mm above the ground.

Orientation Towards the front.

 

d.Side retro-reflector (non-triangular)

Presence

Mandatory: On all motor vehicles the length of which exceeds 6 m. On all trailers.

Optional: On motor vehicles the length of which does not exceed 6 m.

Number

Such that the requirements for longitudinal positioning are complied with. The performances of these devices shall conform to the requirements concerning Class IA or IB retro-reflectors. Additional retro-reflecting devices and materials, are permitted provided they do not impair the effectiveness of the mandatory lighting and light-signalling devices.

Position

In width: no special requirement.

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 lamp(s), 1,500 mm if the shape of the bodywork makes it impossible to keep within 900 mm or 1,200 mm respectively or if the presence of the device is not mandatory.

In length: at least one side retro-reflector shall be fitted to the middle third of the vehicle, the foremost side retro-reflector being not further than 3 m from the front;

The distance between two adjacent side retro-reflectors shall not exceed 3 m.

This does not, however, apply to M 1 and N 1 category vehicles.

If the structure, design or the operational use of the vehicle makes it impossible to comply with such a requirement, this distance may be increased to 4 m. The distance between the rearmost side retro-reflector and the rear of the vehicle shall not exceed 1 m. However, for motor vehicles the length of which does not exceed 6 m, it is sufficient to have one side retro-reflector fitted within the first third and/or one within the last third of the vehicle length.

However, for motor vehicles the length of which does not exceed 6 m, it is sufficient to have one side retro-reflector fitted within the first third and/or one within the last third of the vehicle length. For M 1 vehicles the length of which exceeds 6 m but does not exceed 7 m it is sufficient to have one side retro-reflector fitted not further than 3 m from the front and one within the last third of the vehicle length.

Geometric visibility

Horizontal angle: 45° to the front and to the rear.

Vertical angle: 10° above and below the horizontal. The vertical angle below the horizontal may be reduced to 5° in the case of a retro-reflector less than 750 mm above the ground.

Orientation Towards the side.

 

 

 

 

 

 

 

 

 

 

 

 

 “E /ECE/324/Rev.1/Add.47/Rev.9− E /ECE/TRANS/505/Rev.1/Add.47/Rev.9, Uniform provisions concerning the approval of vehicles with regard to the installation of lighting and light-signalling devices”