UN R149 Supplement 9 (00 series) · UNECE Regulation No. 149 (ECE R149) — Uniform provisions concerning the approval of road illumination devices (lamps) and systems for power-driven vehicles.
UN R149 — Supplement 9 to the 00 series of amendments
Supplement 8 → 9
- What changed
- For classes A, B and D and AFS, item (a) of Annex 8, paragraph 3.7.1.2.1., no longer names point HV.
- Why
- The GTB proposal intends to align the measurement points for the mechanical deterioration test with UN Regulations Nos. 98, 112 and 123.
Q1What changed1 change
Point HV deleted from item (a) of Annex 8, paragraph 3.7.1.2.1.
In Annex 8, paragraph 3.7.1.2.1., item (a) no longer names point HV. The remaining points in item (a) are B50L for the maximum values and 75R for the minimum values. For headlamps intended for left-hand traffic, the points are B50R and 75L. Before, item (a) named points B 50 L and HV for the maximum values. For headlamps intended for left-hand traffic, it named points B 50 R, HV and 75 L. Item (b), for a headlamp producing driving beam only, uses the minimum values prescribed for HV.
Q2Why it changed
- Proposed by
- Expert from the International Automotive Lighting and Light-Signalling Expert Group (GTB)
- Working party
- GRE, 91st session (October 2024)
Reasons
The photometric measurement in point HV for passing-beam headlamps was deleted from UN Regulations Nos. 98, 112 and 123 at the seventy-sixth session of GRE. During the preparation of UN Regulation No. 149, this amendment might have been inadvertently overlooked, so point HV for passing-beam headlamps remained in Annex 8.
Sources (2)
“The photometric measurement in point HV for the passing-beam headlamps was deleted from UN Regulations Nos. 98, 112 and 123 at the seventy-sixth session of the Working Party on Lighting and Light-Signalling (GRE)”
“During the preparation of UN Regulation No. 149 this amendment might have been inadvertently overlooked, then measuring point HV for passing-beam headlamps remained in the Annex 8.”
The proposal intends to remove the inconsistency between UN Regulation No. 149 and the frozen UN Regulations Nos. 98, 112 and 123. It intends to do this by aligning the measurement points for the mechanical deterioration test.
Sources (2)
“This proposal intends to rectify the inconsistency between UN Regulation No. 149, (both original version and 01 series of amendments) and the frozen UN Regulations”
“(namely UN Regulations Nos. 98, 112 and 123) by aligning the measurement points for the mechanical deterioration test.”
Deleting point HV for passing-beam headlamps does not change any technical requirement, because UN Regulation No. 149 specifies no photometric values for point HV.
Source
“The deletion of measuring point HV, for the passing-beam headlamps, does not change any technical requirement since there are no photometric values specified for point HV in the UN Regulation No. 149”
Document trail
- 2024-08ProposalECE/TRANS/WP.29/GRE/2024/18Proposal by the expert from GTB to clarify and correct the text
- —Working party adoptsECE/TRANS/WP.29/GRE/91Session report, para. 23
- 2024-12Sent to WP.29ECE/TRANS/WP.29/2025/38Text that GRE sent to WP.29 and AC.1
- 2025-03WP.29 adoptsECE/TRANS/WP.29/1184Adopted at the 195th session (session report, para. 109)
- 2025-09-26In forceC.N.528.2025.TREATIES-XI.B.16.149UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- No direct action for this role.
Technical service / Approval authority
- No direct action for this role.
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More UN R149 change reports
- 01 series — Supplement 8
- 01 series — Supplement 7
- 01 series — Supplement 6
- 01 series — Supplement 5
- 01 series — Supplement 4
- 01 series — Supplement 2
- 01 series — Supplement 1
- 01 series — Base text
- 00 series — Supplement 11
- 00 series — Supplement 10
- 00 series — Supplement 8
- 00 series — Supplement 7
- 00 series — Supplement 6
- 00 series — Supplement 5
- 00 series — Supplement 4
- 00 series — Supplement 3