ECE R2

The ECE R2 standardisation (originally for low beam lights) has now been merged into the modern ECE R149 and R48. Dimming lights, also known as low beam or passing beam, are intended to illuminate the road directly in front of the vehicle without blinding other road users. These standards still ensure the performance and safety of low beam lights, especially while driving in bad weather or at night.

The importance of low beam lights

Low-beam lights play a crucial role in road safety. They ensure that drivers have sufficient visibility on the road while preventing glare from oncoming traffic. The use of low beam lights is mandatory in many situations, such as bad weather, twilight or in tunnels. The original ECE R2 standard has since been replaced by ECE R149 (photometry and light sources) and ECE R48 (installation). You can read more about all current ECE standards in our overview article: ECE standards: Important regulations in vehicle lighting.

ECE R2 (now R149 + R48) specifications

The original ECE R2 determined the specifications for low beam dimming lights with bulbs. Today, these requirements apply via ECE R149 and ECE R48, including colour, light intensity and positioning. The main specifications are:

• Colour: dimming lights must emit a white light with strict CIE chromaticity coordinates (yellow is no longer permitted for dimming lights).
• intensity: sufficient light intensity to illuminate the road properly, but within the photometric limits of R149 to avoid glare.
• placement: dimming lights must be mounted at a specific height and angle according to ECE R48.

For whom are ECE R2, R149 and R48 intended?

These standards are intended for vehicle manufacturers, mechanics and importers responsible for the installation and maintenance of low beam lights. They apply to all vehicles used on public roads, including passenger cars, buses, motorbikes and lighting for trucks.

Implementation of ECE R149 and R48 (successors to R2)

Manufacturers and mechanics must ensure that their vehicles meet these standards through rigorous testing and certification. Here are some steps:

• Light intensity testing: use light meters according to the photometric tables of ECE R149.
• Correct positioning: dimming lights at the correct height and angle according to ECE R48.
• durability testing: truck under different conditions for consistent performance.

Advantages of the current ECE standards (R149 + R48)

Compliance with the successors to ECE R2 offers several advantages:

• Safety: improved visibility reduces the risk of accidents.
• Consistency: uniform standards for all vehicles.
• regulations: easier export to different markets.

Practical tips for mechanics

• Use approved components: only dimming lights and LED units with valid E-approval according to ECE R149 and ECE R48.
• Regular checks: check after repairs or modifications.
• Stay informed: follow updates via our ECE standards overview.

Compliance with the successors to ECE R2 (R149 and R48) is essential for road safety. Correctly installed low-beam lights ensure good visibility without glare. Engineers and manufacturers play a crucial role in implementing these standards.