The Point:
Approved H11 LEDr products provide a standardized replacement-light-source route under UN Regulation No. 37. For a specific product and market, verify the approval scope, correct installation, and applicable national rules before claiming road-use legality.
1.Is Your LED Upgrade Actually Legal?
For years, car enthusiasts had a frustrating choice: stay with dim, yellow halogen bulbs or risk “Off-Road Use Only” LED retrofits that could result in heavy fines, failed vehicle inspections (MOT/TÜV), and dangerous glare for other drivers.
The era of compromise is over now. Thanks to new international safety standards,H11 LEDr is now a defined replacement-light-source category within the UN R37 framework. Of course, within the legal requirements of ECE R37,a product-level road-use claim must be supported by the matching approval documents and the rules applicable in the destination market.
2.What are the structural features of bulbs that comply with ECE R37 certification?
Understanding the Cut-Off Line
Before diving into structural design, we must first define a critical term: the cut-off line.
- What it is: The sharp, distinct boundary between the illuminated and dark areas when a light beam hits a wall or the road.
- What it does: By preventing light from scattering upward, it eliminates blinding glare for oncoming drivers and pedestrians, serving as the ultimate visual benchmark for road legality and safety.
The Common Misconception
Many drivers assume that a sharp cut-off line is created solely by the replacement LED bulb itself.
The Reality
The cut-off line is actually shaped by your headlight assembly’s internal optics (such as the projector bowl or reflector shield). However, for those optics to perform correctly, the LED light source must replicate the exact physical position and dimensions of the original halogen filament.
To meet this standard, LEDOAUTO’s design team breaks down the three essential structural features required for full ECE R37 compliance.
1.Geometric Equivalence:
Our H11-LEDr bulbs are designed to mimic the exact 3D coordinates of a tungsten filament. This design aims to preserve the intended beam distribution and control glare when the approved product is correctly installed in a compatible H11 lamp.
2.The 3D Box System:
To pass street-legal certifications, the light-emitting area must fit within a microscopic “Box System.” If 90% of the light does not originate from that specific zone, itʼs not road-legal. Ours does.
3.Full Compliance:
The exact product model should be matched to its UN R37 approval and, where applicable, its UN R10 EMC test/approval documentation. UN R10 evidence supports EMC compliance for the covered model; it is not a blanket guarantee of zero radio interference or zero dashboard errors in every vehicle.
3. Technical Comparison: EB Series vs Halogen！
Technical superiority is now verifiable. See how the certified AZMK H11-LEDr outperforms traditional halogen technology:
|
Specification |
Standard |
(Certified) |
EB h11 ledr advantages |
|---|---|---|---|
|
Luminous Flux |
1,350 lm ± 10% |
1,350 lm ± 10% |
adjustable. |
|
Power |
55W |
15W |
-70% Heat; low power consumption |
|
Contrast Ratio |
> 80:1 |
> 100:1 (Min) |
Clearer beam pattern; no stray light. |
|
Color |
~3200K (Warm) |
Cool White |
Clearer identification of road hazards. |
|
EMC |
Native |
R10.06 Certified |
UN R10 evidence available for the covered model; confirm the exact certificate and product match. |
|
Approval Mark |
Standard |
E8(E-Mark) |
UN R37 type approved for the stated LEDr category; road use remains subject to approval scope, correct installation, and applicable national rules. |
4. Compliance Proof: What to Look For？
Look for these professional-grade markers on the bulb’s metal flange to ensure legality:
The E8 Mark: The E-country code identifies the approval authority that granted the approval. It does not indicate product origin and should not be used alone as proof of unrestricted road legality. Verify the full approval number, regulation, category, product type, and approval scope.
The HE Symbol:Reserved only for high-efficiency, certified LED replacements.
TÜV SÜD Verification:Rigorous testing by one of the world’s most prestigious laboratories.
5. About the ECE R37(ledr-h11) compatible car models
The H11-LEDr is a direct replacement for both Low Beam and Front Fog applications. The standardized H11/PGJ19-2 interface supports physical fitment in H11 applications. Before installation, confirm the vehicle’s bulb category, available space, electrical behavior, correct installation, and local road-use requirements.
Vehicle Application Guide (H11-LEDr)
Precision-engineered for 1:1 replacement across the following mainstream brands.
Mainstream Passenger Cars
🏍️ Motorcycles
Honda CBR, Kawasaki Ninja, Yamaha R1
🚛 Heavy Duty
Scania R/G/P Series, Volvo FH/FM
Note: Always refer to your vehicle owner’s manual to confirm the PGJ19-2 base type and specific trim level.
Looking for a specific vehicle not listed above?
For a complete list of models, please contact
ledoauto.com
Disclaimer:
Road legality is subject to national regulations in individual member states. Please consult your local transport authority regarding the use of EMarked LED replacements.
