ECE R.77 UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PARKING LAMPSFOR POWER-DRIVEN VEHICLES

Regulation applies to parking lamps for vehicles of categories M, N and T 1/. _

“Parking lamp” means the lamp used to draw attention to the presence of a stationary vehicle;

In the reference axis, the light emitted by each of the two samples shall be of not less than the minimum intensity and of not more than the maximum intensity specified below:

Intensity of forward facing parking lamps:
Minimum(cd) 2

Maximum

(cd) 60

Intensity of rearward facing parking lamps: Minimum(cd)
2
Maximum

(cd) 30
TEST PROCEDURE

All measurements shall be carried out with uncoloured standard filament lamps of the types prescribed for the device, adjusted to produce the normal luminous flux prescribed for those types of lamps.

All measurements on lamps equipped with non-replaceable light sources (filament lamps and other) shall be made at 6.75 V, 13.5 V or 28.0 V respectively.

In the case of light sources supplied by a special power supply, the above test voltages shall be applied to the input terminals of that power supply. The test laboratory may require from the manufacturer the special power supply needed to supply the light sources.

The limits of the apparent surface in the direction of the reference axis of a light-signalling device shall be determined.
COLOUR OF LIGHT EMITTED

The colour of the light emitted inside the field of the light distribution grid defined at paragraph 2. of Annex 4, measured by using a source of light with a colour temperature of 2,856 K, corresponding to illuminant A of the International
Commission on Illumination (CIE), shall be within the limits of the co-ordinates prescribed for the colour in question in Annex 5 to this Regulation. Outside this field no sharp variation of colour shall be observed.

However, for lamps equipped with non-replaceable light sources (filament lamps and other), the colorimetric characteristics should be verified with the light sources present in the lamp, in accordance with paragraph 8.1. of this Regulation.

LISUN following instruments fully meet ECE R.77 UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PARKING LAMPSFOR POWER-DRIVEN VEHICLES:

LSG-1950S Goniophotometer for Traffic Signal Lamps

LSG-1950 Goniophotometer for Automotive and Signal Lamps