UN ECE standards and legislation: for vehicle lighting

The UN ECE regulations consist of technical standards used worldwide for vehicle safety and performance. Whether you are a manufacturer, installer or vehicle builder, understanding these regulations is essential.

These standards are developed by the United Nations Economic Commission for Europe (UNECE). They set out the minimum requirements that vehicles and vehicle components must meet in order to be authorised for the market. We often refer to ECE standards, such as the well-known ECE R10 for electromagnetic compatibility or ECE R48 for the installation of vehicle lighting.

UN/ECE legislation covers much more than just lighting. For those working with vehicle lighting, it mainly revolves around three things:

• What exactly the ECE regulations mean
• What is the difference between E-marking and ECE certification?
• Which ECE standards are important for vehicle lighting

What does ECE mean and why is it important?

The ECE regulation is an internationally recognised system of vehicle standards that originated in Europe and is now widely applied beyond its borders. As a result, manufacturers, bodybuilders and approval authorities operate within a harmonised technical framework.

Each ECE regulation has its own number. For example:

• ECE R10: electromagnetic compatibility (EMC)
• ECE R65: optical warning lights
• ECE R48: installation regulations for vehicle lighting

Manufacturers must comply with these standards to legally market their products in countries that apply these regulations. That is why these regulations also play an important role in the rules governing lighting on trucks and semi-trailers.

What is the difference between the ECE regulation and the E-mark?

An ECE regulation is the technical standard with which a product or vehicle must comply. This regulation sets out the applicable requirements and the necessary tests. The E-mark is the visible approval mark on the product, demonstrating that the relevant type approval has been granted. In short: the regulation is the guideline; the E-mark is the proof of approval. Find out more about the E-mark.

Product approval versus installation regulations

A common misconception is that a single ECE approval covers everything. In reality, there are two types of regulations. Product regulations assess the light itself. Does the light perform well enough, does it emit the correct light colour, and does it cause any interference with other electronic systems? These include, amongst others, R10, R65, R148, R149 and R150.

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The installation regulation, ECE R48, assesses something slightly different. This regulation concerns how, where and how many lights are fitted to the vehicle. It also covers the mounting height, spacing between lights, visibility and wiring. Both are necessary. A light with a valid E-mark that is mounted incorrectly still does not comply with R48. Conversely, perfect mounting is of no use if the light itself is not approved. Read more about ECE R48 and the installation regulations.

Practical benefit: a light with a valid E-mark may still be rejected if the mounting does not comply with R48. By selecting and fitting lighting in accordance with both sets of regulations, you can avoid costly rectifications later on.

Important ECE standards for vehicle lighting

In order to sell and correctly fit lighting on the European market, it must comply with specific ECE standards. These are the key regulations for vehicle lighting:

ECE R10 – electromagnetic compatibility (EMC)
LED lamps can emit electromagnetic signals that interfere with radios and other electronic devices. ECE R10-certified lighting minimises such interference. Read more about the ECE R10 standard.

ECE R23 – reversing lights
Reversing lights must comply with ECE R23 to ensure they are clearly visible without dazzling other road users. Read more about the ECE R23 standard.

ECE R65 – beacor bars, flashing lights and warning lights
This standard sets out the requirements for optical warning lights on emergency services vehicles, work vehicles and specialist applications. ECE R65 is therefore the most important standard for flashing beacons, warning lights and beacor bars. TRALERT® offers a wide range of certified LED beacon bars.

ECE R149 – headlights and driving lights
Lights that illuminate the road ahead of the vehicle must comply with ECE R149. This regulation replaces older rules for driving lights and helps prevent oncoming traffic from being dazzled. Read more about the ECE R149 standard.

The table below summarises the key regulations for vehicle lighting. It clearly shows the difference between product-level and vehicle-level requirements.

Regulations	About	Level	Relevance to vehicle lighting
ECE R10	Electromagnetic compatibility (EMC)	Product	Fault-free LED electronics
ECE R48	Installation of lighting on the vehicle	Vehicle	Position, height, number and circuit configuration
ECE R65	Optical warning lights	Product	Flashing beacons, warning lights and beacor bars
ECE R148	Light signal functions	Product	Rear lights, brake lights, indicators, position lights, side marker lights and position lights
ECE R149	Driving lights	Product	Headlights, driving lights, LED bars and front fog lights
ECE R150	Retroreflection	Product	Reflectors and contour marking

R148, R149 and R150: three modern sets of regulations

Within the modern UNECE framework, many older lighting regulations have been consolidated into three new main regulations. ECE R148 covers light-signalling functions, R149 deals with driving lights and ECE R150 covers retro-reflective devices. This has made the regulatory landscape clearer. In older files, you will still come across individual regulation numbers, whilst new type approvals increasingly refer to these three umbrella regulations.

Kismet: many professionals look first at the E-mark on the light. Yet the real surprise often lies in the mounting. A light that is fully approved may still be rejected if its mounting, visibility or wiring does not comply with R48.

Which ECE standards apply to trucks and trailers?

On a truck, you will find virtually all of the above regulations reflected. R48 governs the mounting of the overall light image. R10 ensures fault-free electronics. R148 applies to rear, brake, direction indicator and marker lights. R149 is relevant for headlights and driving lights. R65 comes into play whenever warning lights are used. Which combination is mandatory depends on the vehicle type, surface mounting and intended use.

For trailers and semi-trailers, or vehicle category O, the emphasis is often on R48 for positioning, R148 for signal lights and R150 for reflectors and contour marking. As trailers are often longer, additional requirements apply to side marking and spacing between lights. You can find the practical dimensions in our guide to the fitting regulations for trailer lighting. And if you’re looking for lighting, do take a look at the plug-&-play lighting kits for 24V semi-trailers. These complete sets are fully equipped with all the certified lighting required for semi-trailers and other heavy goods vehicles.

What is UNECE's role in ECE regulations?

The UNECE draws up and updates the ECE regulations. In doing so, the organisation shapes the technical foundation for many international vehicle standards. In addition to vehicle lighting, the UNECE regulations also cover other important areas:

• ADR regulations: for the safe transport of dangerous goods
• Weight and dimension regulations: for maximum vehicle dimensions and masses
• Road safety requirements: for signal lighting and vehicle equipment, amongst other things

Many UNECE standards are subsequently incorporated into European and national approval frameworks. That is why the entire supply chain, from manufacturer to surface mounting company and distributor, works in accordance with these technical regulations. As a supplier of lorry lighting, TRALERT® therefore always includes the relevant certifications in its data sheets and product specifications.

ECE regulations and national legislation

UN/ECE regulations ensure technical harmonisation between countries, but they do not replace national traffic and usage regulations. A light may therefore be internationally approved and still be subject to additional national provisions, for example regarding warning lights or use on public roads.

That is why it is important to distinguish between type approval and the actual use of lighting. A product may be technically approved, whilst its use in a specific country may be restricted or subject to conditions. You should therefore always take into account the regulations of the country in which the vehicle is being driven. You can read more about this on our page on UNECE regulations.

Frequently asked questions on ECE regulations

Is ECE regulation mandatory?
Yes, in many cases compliance with ECE regulations is a prerequisite for the approval of vehicle components. You are not permitted to use lighting without valid approval on public roads. This often leads to failure during vehicle inspections and may result in a fine if enforced.

How do I know if a product complies with ECE standards?
Products that comply with ECE regulations have an E-mark on the housing or packaging. This mark refers to the type approval and the regulation against which the product has been tested, such as R10, R65 or R148. You should also always check the datasheet for full certification details.

Are ECE regulations the same as UNECE regulations?
Not quite. The UNECE is the organisation that draws up the rules. The ECE regulations are the set of technical regulations that result from this. Internationally, the term ‘UN Regulations’ is also frequently used these days. A complete overview can be found on the official page on UNECE regulations.

Is a CE mark sufficient for vehicle lighting?
No. A CE marking indicates that a product complies with general European product and safety directives. It is not a road approval. For lighting used on public roads, you need an ECE type approval with an E-mark. CE marking alone is therefore not sufficient for vehicle lighting.

What is the difference between ECE and E-mark?

ECE refers to the technical regulations. The E-mark is the visible symbol indicating that the product has been approved in accordance with those regulations. You therefore need both: the standard as a basis and the mark as proof.

Do you want to be sure that your lighting complies with the relevant regulations and is installed correctly? TRALERT® works with you every step of the way, from the drawing board to mounting, and supplies certified LED lighting for the most demanding applications.