For a bicycle to be legal on German roads, its lighting must comply with the German Road Traffic Licensing Regulations (StVZO). These regulations serve an important purpose: to ensure that you not only see well enough in the dark, but are also seen early by other road users. When it comes to lighting, a basic distinction is made between... front white and one rear red lightBoth lights must be constantly illuminated – flashing lights are not permitted on a bicycle compliant with German road traffic regulations (StVZO). Modern LED lights easily meet these requirements and offer high luminosity with low energy consumption.

Another important point concerns the type of lighting. While previously only permanently mounted, dynamo-powered lamps were permitted, the law has since been amended: Today you can also use battery-powered or rechargeable LED lamps, as long as they have German road traffic regulations (StVZO) approval. You can recognize this by the... “K-mark”This mark, usually printed on the lamp's housing or lens, confirms that the light distribution, brightness, and glare-free illumination have been tested. Glare-free illumination is particularly important because many very bright sports lamps, while impressive off-road, cause excessive glare in road traffic – and therefore lack road approval.

In addition to front and rear lights, the German Road Traffic Regulations (StVZO) also require... reflectors Regarding safety-relevant equipment: This may be permanently installed or, in some models, integrated into the lamp. This includes a white reflector at the front, a red one at the rear, and yellow reflectors on the pedals and wheels (via spoke reflectors or reflective tire sidewalls). Even though modern LED lighting provides excellent visibility, these passive reflectors offer additional protection should a lamp fail.

There are additional special features for e-bikes and S-Pedelecs. Many e-bikes have a Front headlights directly connected to the systemwhich is powered by a battery and can therefore offer significantly more power. S-Pedelecs even require helmets and lights to be used during the day, as they are legally classified more like mopeds.

In summary: If your lighting bears the K-mark, shines brightly, is correctly mounted, and you also ensure that the reflectors are intact, you are traveling safely and in accordance with the rules.

How bright a bicycle light should be depends heavily on where and how you ride. The brightness of bicycle lights is measured in Lumen The lumen rating is a value that describes how much visible light a lamp produces overall. But lumens alone aren't everything: the wattage is just as crucial. Light distribution...that is, how the lamp shapes the beam of light. For example, a lamp compliant with German road traffic regulations (StVZO) must not shine upwards to avoid dazzling oncoming traffic. Therefore, some lamps with fewer lumens appear brighter or more usable because they direct the light specifically onto the road.

For journeys within the city, this is usually sufficient. 30–80 lumens This area is illuminated by streetlights, primarily to ensure visibility. A good, road-legal lamp in this area will provide sufficient illumination of the road ahead without causing glare.

However, once you're outside the city, things change. On unlit country lanes or in forests, you need significantly more light to be able to see obstacles safely. For such situations, lamps in the range of... 150–300 lumens Ideal. They offer sufficient brightness without consuming unnecessary energy. Sporty riders or gravel and mountain bikers even choose lights with 500 lumens and moreHowever, these often do not have StVZO approval because the light cone scatters too much.

E-bikes often feature specially designed components. System-integrated headlights, which often have a rated power in lux Instead of specifying lumens, lux measures the actual illuminance on a surface and is often more meaningful for practical use. A good e-bike headlight, for example, has... 50–80 lux, even high-quality models 100 lux or more.

If you're unsure, consider where you ride most often. For daily commutes, city traffic, and normal routes, a reliable StVZO-compliant light with moderate lumen output is perfectly adequate. If you ride off-road, a more powerful light is worthwhile – and perhaps an additional helmet or handlebar light for maximum visibility and safety.

The most important difference is that StVZO-compliant lighting It must meet legally tested safety standards. These include a fixed, glare-free light distribution, specific minimum and maximum brightness levels, and clearly defined technical requirements. Such a lamp bears the aforementioned [marking/command/etc.]. “K-mark”This clearly identifies them as approved for road use. Lights compliant with German road traffic regulations (StVZO) direct their light specifically onto the road, not into the eyes of oncoming pedestrians.

Unauthorized lightingIn contrast, lamps often originating from the sports or outdoor sector are designed for off-road situations – such as night riding on mountain bikes or trails. These lamps often produce extremely high lumen output and a wide beam pattern, making obstacles in the terrain optimally visible. At the same time, however, they are far too bright for road use and can dazzle other drivers, creating dangerous situations. Therefore, they are not permitted for use on public roads, even if they may be technically much more powerful.

In everyday life, this means: For all journeys on public roads – whether to work, school, or for leisure rides – you must use lights that comply with German road traffic regulations (StVZO). However, you can also mount non-approved lights, as long as they remain switched off when you are in areas where the StVZO applies. Many sporty riders, for example, use a StVZO-compliant light for the road and a powerful auxiliary light for off-road riding.

StVZO-compliant lighting also has the advantage of usually being more efficient, as it requires fewer lumens to achieve the same usable illumination. This is due to the optimized light distribution with a defined cut-off. As a result, it is particularly suitable for everyday use, energy-saving, and safe for you and others.

E-bikes have special requirements when it comes to lighting. Because they accelerate faster and travel at higher average speeds, a powerful, high-quality lighting system is crucial for safety. Many modern e-bikes are equipped with... system-integrated lightingwhich is powered directly from the battery. This means: You don't have to change batteries, you have a constant light output, and you can use significantly brighter lamps than would be usual with purely battery-powered lamps.

The ideal e-bike light should have at least 50 lux own high-quality models even 70–120 luxThese values describe the actual brightness on the road, not just the raw power output in lumens. Uniform, glare-free light distribution, a wide beam angle, and a clear cut-off line are among the most important quality characteristics.

Additionally, it may be useful to have a Daytime running lights to use, which greatly increases daytime visibility. Many premium lights automatically switch between day and night modes, further enhancing convenience. Since e-bikes are often heavier and faster, the rear light should also be powerful and highly visible – ideally with beam guidance, integrated reflector, and a standlight function.