H11 LEDr approval means that a specific LED replacement light-source type has been approved under UN Regulation No. 37 against the H11 LEDr category requirements. It does not make every H11-shaped LED bulb legal. For a European importer, the useful question is whether the offered type, its physical markings, its approval document, the receiving lamp category, and the intended market all match.
Is H11 LEDr approved under UN R37?
Yes. H11 LEDr is an effective category within the UNECE light-source framework. The current basis combines UN Regulation No. 37, Revision 7, Amendment 11 with the applicable H11 LEDr category sheets in R.E.5. The 2024 amendment introduced Configuration 2 for H11 LEDr, with that R.E.5 version valid from 13 November 2024, as recorded in ECE/TRANS/WP.29/2024/156.
This is a category and type-approval statement. It is not an unconditional road-use statement. R.E.5 limits an LEDr category to lamps approved with a filament light source of the same category designation. An approved H11 LEDr therefore belongs in a lamp approved for H11, subject to the approved type, correct installation, and the rules applied in the destination market.
A generic H11 LED retrofit does not gain this status because it fits a PGJ19-2 socket or carries an E-mark. The approval must relate to the actual product type. The number and category on the product must agree with the approval document.
Why did H11 become the first practical LEDr category?
UNECE documents do not give one official sentence naming H11 as the easiest or best category. The engineering record supports a narrower inference. H11 is a single-function category with a standardized PGJ19-2 cap and a defined relationship between the reference plane and the light-emitting region. Those features give engineers measurable geometry for comparing an LED source with the H11 filament source it replaces.
The historical H11 LEDr category-sheet proposal shows how the cap, envelope, emitting region, electrical conditions, and photometric checks were specified. It is a proposal document used to explain the development history, not a substitute for the current consolidated requirements.
An informal H11 equivalence report from 2020, reviewed by the LEDOAUTO Engineering Team on 15 July 2026, also records the technical comparison work. Its informal status matters. It explains the reasoning behind equivalence checks but does not, by itself, prove that a current product type is approved.
For an importer, H11’s history is less important than the evidence chain. A supplier should be able to connect the physical lamp marking to an approval issued for the same type and category. Product design similarity alone is not enough.
What was tested for H11 LEDr approval?
UN R37 approval is not a lumen-only test. The applicable requirements examine whether the light source matches its category definition and performs within controlled electrical, geometric, photometric, thermal, and marking conditions.
The approval evidence should address the cap and interchangeability dimensions, the maximum outline, the position and size of the light-emitting region, color, luminous flux, light distribution, electrical behavior, and performance at specified temperatures. LED-specific controls also cover behavior after warm-up, polarity, modulation behavior where applicable, and defined failure behavior.
Geometry has a direct relationship with lamp optics. A reflector or projector approved around an H11 filament expects light from a defined location and region. A retrofit can match socket dimensions while placing its emitters too far forward, too far back, or outside the intended area. That is why a fitment claim and an approval claim must remain separate.
The same separation applies to R10. An R10 approval concerns the relevant electromagnetic compatibility requirements. It does not establish H11 LEDr approval under UN R37 and does not prove that the light source is permitted for road use.
Buyers who need test values should request the approved documentation for the offered type rather than relying on copied figures from a marketing page.
What is the status of H8, H16, and related categories?
H8 and H16 are related through the PGJ19 cap family, but they are separate categories. An H11 LEDr approval does not cover H8 or H16. The same rule applies to HB4.
|
Category |
Status |
Effective date |
Source |
|---|---|---|---|
|
H11 LEDr |
Effective, verified 17 July 2026 |
Current H11 Configuration 2 version valid from 13 November 2024 |
|
|
H8 LEDr |
Effective, verified 17 July 2026 |
11 March 2026 |
|
|
H16 LEDr |
Effective, verified 17 July 2026 |
11 March 2026 |
|
|
HB4 LEDr |
Effective, verified 17 July 2026 |
11 March 2026 |
The WP.29 meeting record confirms adoption of Amendment 12 at the 198th session. Each category still requires its own approval. H4 and H7 vehicle-based positive-list approvals used in some countries are a different mechanism. They must not be described as effective UN R37 H4 LEDr or H7 LEDr category approvals.
Where can an H11 LEDr be used on the road in Europe?
UN R37 sits within the UNECE 1958 Agreement framework. It is not an EU-only regulation. European Union member states participate in that framework, while other contracting parties include the United Kingdom, Norway, Switzerland, Türkiye, Japan, and Australia. Importers should therefore avoid wording such as “EU certification” when the document is a UN type approval.
The safe road-use statement has conditions. The offered light source must be the approved type. It must be installed in a lamp approved with an H11 filament light source, and the installation must remain within the approval conditions. National registration, inspection, or enforcement rules may still determine what documentation a buyer or vehicle operator must present.
This does not mean every H11 vehicle application is automatically cleared by a product page. The light-source approval does not certify every vehicle, every lamp, or every installation. Importers should identify the destination markets and ask whether additional national documentation, labeling, or inspection evidence is needed.
For the United States, this product is for off-road use only. LED replacement light sources fitted into halogen replaceable-bulb headlamps are not recognized for road use under FMVSS No. 108, so physical fitment in an H11 socket does not establish US road compliance.
What does H11 LEDr approval not prove?
H11 LEDr approval does not prove that every H11 LED bulb is approved. It does not transfer from one approval holder or product type to another. It does not cover H8, H16, H4, H7, or any other category.
It also does not prove that an E-marked product is automatically road legal. The country code after the E identifies the authority that granted an approval. It is not a country-of-origin mark and does not, by itself, identify which regulation or product type the approval covers.
A standardized PGJ19-2 cap supports design fitment. It does not replace the approval document, establish correct optical performance, or remove market-specific conditions. CE, RoHS, R10, socket compatibility, and UN R37 approval are separate evidence claims and should remain separate in supplier files and sales copy.
How can buyers verify the approval number?
Start with the physical product, not the supplier’s headline. Photograph the marking on the lamp and record the E-mark, approval number, category designation, product type, and brand or holder information shown on the item and packaging.
Request the approval document and compare those fields. The category should identify H11 LEDr, and the product type should match the offered item. Check whether the approval holder, manufacturer, brand relationship, and any extensions are documented. A certificate for another type, another category, or another company does not validate the sample in hand.
Then confirm the destination use. The receiving lamp must be approved for H11, and the buyer should document the target countries. Keep the approval document, matching product photographs, purchase specification, and change-control record in the supplier file. If the supplier changes the driver, emitter arrangement, cap, housing, or product type, request confirmation that the approved configuration still applies.
Use the H11 LEDr certificate verification guide for the field-by-field check.
What should buyers request for an AZMK EB H11 LEDr inquiry?
AZMK identifies the brand used for the EB H11 LEDr product line. The brand name is an entity identifier, not an approval claim, and it does not extend the regulatory status of any product type.
For an AZMK EB H11 LEDr wholesale inquiry, send the destination markets, annual volume, packaging requirements, and the intended H11 applications. Ask LEDOAUTO for the approval evidence that matches the offered product type, controlled product specifications, marking photographs, and the applicable change record.
The ECE R37 H11 LEDr product page is the product-level next step. Buyers comparing regulatory mechanisms can continue to the LEDr compliance guide and the LEDr versus retrofit versus substitute comparison.
Frequently asked questions
By Jack Liu, Co-founder & Product Director, LEDOAUTO
Regulatory review: LEDOAUTO Engineering Team, verified against official UNECE documents
Last reviewed: 17 July 2026
References
How to Source Road-Legal H11 LED Bulbs from China
