Proposal for a new UN Regulation on light-signalling devices, consolidating and superseding provisions of UN Regulations Nos. 4, 6, 7, 23, 38, 50, 77, 87 and 91.

Proposal to

• clarify paragraph 2.1 with regard to definitions: “All the definitions given in the latest series of amendments to UN Regulation No. 48 in force at the time of application for type approval shall apply, unless otherwise specified in this UN Regulation or in the pertinent installation UN Regulations Nos. 53, 74 and 86.”
• amend the inboard visibility angle for rear position lamps in pairs in the new UN Regulation on Light-Signalling Devices (LSD)
• Use of LED substitute light source(s) is allowed and does not constitute a change of the lamp type. However, lamp performances shall be tested during type approval also with the LED substitute light source. Approval of the lamp using filament light source(s) is a prerequisite for approval of the lamp using LED substitute light source(s).
• Testing with LED substitute light sources is exempted from conformity of production control.
• The technical description shall include notice that the lamp also has to be approved with the LED substitute light source(s) according to UN R128 if the applicant has so determined.
• The approval marking or the Unique Identifier as well as the category or categories of LED substitute light source(s) prescribed, if any, shall be visible.
• The indication of both the holder of the filament light source and of its LED counterpart light source, if any, shall be explicitly provided.
• Introduce requirements for automatic switching from DRL to headlamp(s) if the maximum luminous intensity of DRL is above 700 cd.

Proposal to differentiate light source modules in cases where a signalling device contains more than one different module, to restore the sequential activation of direction indicators of categories 11, 11a, 11b, 11c and 12, which were included in UN Regulation No. 50 but omitted when UN R148 was developed during SLR Stage 1, to delete a footnote indicator, and to delete characters from a figure on the standard light distribution of devices.

Proposal to remove direction indicator lamps of categories 11 and 12 from the list of lamps required to fulfill n-1 failure requirements of UN R50 and to restore an extra requirement for reversing lamps found in UN R23 but unintentionally omitted from the original text.

Proposal to insert missing text and to correct errors in the original text of UN Regulation No. 148.

Proposal from GRE to comprehensively revise and update UN R148 in a new series of amendments. The proposal introduces new provisions to permit the use of manufacturer logos within the illuminant surface of signalling lamps.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify and correct the text and improve the definition of photometric stability.