SOURCE-LINKED REGULATION GUIDE

UN R37 — Filament light sources

Examine the lamp’s light source by category and technical requirements.

What does it cover?

UN R37 concerns filament light sources defined in its annex for use in approved vehicle and trailer lamps. This version also refers to LED substitute light sources. Check the product category and technical provisions in the full text; approval of a light source does not approve the whole lamp or its installation.

Who is it for?

Vehicle-bulb and light-source makers and lighting-development teams.

Which subjects are addressed?

Filament light sources
Annex-defined categories
LED substitute scope
Technical requirements

Common question

Is every LED substitute automatically accepted?

No. The annex-defined products and relevant technical provisions control the scope. Mention of a technology does not establish compliance for every product.

Source documents and references

E/ECE/324/Rev.1/Add.36/Rev.7/Amend.8 ↗

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