Saturday, May 17, 2008 at 21:50
Thanks for raising the ADR issue again Boobook2.
I do agree this is an area with a large amount of information to plough through to find what is necessary.
You attached 2 ADR docs. ADR 77/00 &78/00.
Both these rule sets refer to Design, Testing and Application of Gas discharge devices to automobiles.
The fitment requirements and the operation of the vehicles are referenced in these ADR's at para 2.1 and reference ADR 13/00.
The current revision of ADR13/00 is ADR 13/00 Compilation 2 (August 2007).
To save you going through this lengthy document suggest you refer to Appendix A subparagraph 6.2.6 and 6.2.9.
Now, you can search this document and you will not find reference to HID but will find Gas discharge lamps are defined.
The other information that will help understand the documents' intention in respect to Gas Discharge lamps, is the light output characteristics of these devices, as
well an understanding of the change in vehicle orientation particularly its front to rear or "pitch" movement with respect to varying loads.
Currently designed automotive Gas Discharge lamps have a luminous intensity of generally 3,000 to 4,000 lumens, certainly above 2,000 which is within the upper end of Halogen luminence.
Vehicles particularly longer wheel base vehicles have a pitch co-efficient above the allowable
Alpha range of 25% (15% up to 10% down), this means they dip at the rear when fully loaded unless significant
suspension modification is present and in any case the manufacturer's specification is included in the calculation which effectively means you cannot achieve compliance with respect to vertical orientation with assistance systems.
Now armed with his information we can interpret the ADR.
Leveling devices are referenced at 6.2.6 in detail, both automatic and manual (which incidentally have to be capable of operation from inside the cabin).
At para 6.2.9 the nub of the issue is described, and the second sentence is quite deliberate. Manual leveling systems are not permitted.
FollowupID:
570482