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ADR lighting for FL vehicles: requirements and suitable lighting
- Updated:
- By: Kevin van Mierlo
The short answer
Vehicles carrying flammable liquids fall under the FL category of ADR legislation. Think tankers carrying petrol, ethanol or solvents. This type of transport involves additional risks, such as explosion risk, vapour formation and intensive cleaning. This is precisely why both the practice and the inspection authorities impose tough requirements on the lighting of FL vehicles.
In this article, you will read:
- What the FL classification means
- Why lighting on FL vehicles requires extra attention
- Which technical requirements apply, such as IP69K and EMC
- Which luminaires and cable solutions work well in practice
What is a FL vehicle according to ADR?
The ADR defines a FL vehicle as a vehicle transporting flammable liquids with a flash point of 60 °C or lower. Examples include fuel tankers, chemical tankers and vehicles transporting solvents. These liquids can already ignite at relatively low temperatures, requiring additional safety measures.
Want to know more about the basic rules for ADR lighting? Read ‘ADR lighting: an explanation of the regulations and practical tips’.
What certification must the lighting comply with?
For lighting, this means that both the components and the installation must comply with the regulations set out in ADR Part 9, as well as ECE regulations such as:
- ECE R48: installation requirements for lighting
- ECE R10: electromagnetic compatibility requirements
- ECE R148: approval of lighting units such as LED lighting
- ECE R65: requirements for optical warning signals (where warning lights or warning lights are fitted). For warning lights, it is also important to note that you will need either R65 Class 1 or R65 Class 2.
These ECE certifications ensure that the lighting is not only functional but can also be used safely within the ADR framework for FL vehicles.
See also our article ‘Installing ADR lighting: connection, cabling and certification’ for practical installation and cabling tips.
Why lighting is extra critical for FL vehicles
Unlike standard truck, FL vehicles are often:
- intensively cleaned with high pressure (because of residue or vapour)
- Exposed to moisture, brine and temperature fluctuations
- Subject to strict testing for visibility and safety
Robustness and protection against harsh conditions also play a major role in ADR lighting for AT vehicles.
Lighting that cannot withstand these conditions can fail or cause rejection. Electromagnetic interference (EMI) due to poor EMC shielding can also cause problems with meters or sensors.
IP69K: essential for tankers
In practice, IP69K lighting is often the standard for FL vehicles. This standard means that the luminaire is resistant to:
- Dust and water intrusion
- High-pressure cleaning up to 100 bar
- Increased temperatures during cleaning
To meet the high standards required for FL vehicles, we recommend our robust IP69K lighting for FL vehicles.
Cabling and connectors
Not only the light itself has to be right. The cabling and connection also determine whether a system is suitable for FL application:
- Use PUR or H07BQ-F cables with heat and chemical resistance
- Fit connectors such as Deutsch or AMP SuperSeal with at least IP67 (preferably IP69K).
- Avoid open connections, welding terminals or temporary structures
- Secure cables without kinks or chafing points
In FL vehicles, cables are often laid in duct or tube, or fitted via pre-assembled wiring harnesses for extra protection.
EMC and testing
All lighting on FL vehicles must comply with ECE R10 (EMC compatibility). A luminaire without this approval can cause interference to measurement systems and is almost always rejected.
Make sure luminaires and connectors are correctly earthed and cables do not run in parallel with communication or sensor systems. This prevents interference.
Additional requirements apply to vehicles in potentially explosive atmospheres. Read more about this in Explosion-proof lighting for EX/II & EX/III ADR vehicles.
Suitable lighting for FL vehicles
FL tankers require lighting that can withstand moisture, steam, high pressure and EMC risk. Examples of suitable products:
LED work light WF-4041
- IP69K, ECE R10, robust aluminium housing, built-in Deutsch-connector
- Ideal as inspection lamp or work light near tank zone

VC-5500 series rear lights
- ADR homologation, IP68, suitable for FL vehicles
- Available in red-yellow, dark-look and transparent
These rear lights are available in red-yellow, dark-look and transparent. Once the right product link is available, it can be added here.
LED ADR rear light, dark-look lens, D-homologation, 12-24v 5-PIN | VC-5500D-B5
In our stock
LED ADR rear lights, clear lens, D-homologation, 12-24v 5-PIN | VC-5500C-B5
In our stock
+31 (0)316 - 372 346 | [email protected]
Disclaimer
At TRALERT®, we do our best to keep the information in this article as accurate and up-to-date as possible, including the regulations surrounding vehicle lighting. However, legislation can change regularly, and although we make every effort to implement these changes in a timely manner, it is possible that certain updates or adjustments have not yet been incorporated into this article. We therefore always advise our readers to check the current legislation with their local government or regulatory bodies, especially when it comes to exceptions or specific national regulations. TRALERT® is not liable for any damages or fines resulting from outdated or incomplete information in this article.
If in doubt, always contact the competent authority to ensure that your vehicle meets all legal requirements.ldoet.
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Author
Kevin van Mierlo
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