Correctly adjusting bicycle lighting means illuminating the road without blinding oncoming traffic. For adjusting bicycle lighting without glare and StVZO-compliant, the criteria are: the cut-off line, the mounting height, and the alignment. The StVZO-compliant adjustment of the bicycle light is required for riding on public roads in Germany.
The Cut-Off Line: Illuminating Without Blinding
StVZO-compliant headlights have a cut-off line that limits the light cone upward. For adjusting the cut-off line, the light should be set so the cut-off is at a defined distance on a wall. A common setting: at 5 m distance, the cut-off line should be about 10 cm below the light's mounting height. This illuminates the road without blinding oncoming traffic.
Mounting Height and Angle
The mounting height affects the light pattern. For the mounting height of the bicycle light, StVZO specifies a maximum height. A lower mounting position reduces glare. The light should be mounted horizontally, not tilted upward.
Adjusting the Taillight
The taillight should be visible from behind and not blinded by the rear wheel or luggage. For the taillight adjustment, check that it is mounted vertically and points straight back. A taillight that points downward is less visible.
| Light | Adjustment | Check |
|---|---|---|
| Headlight | Cut-off line at 5 m about 10 cm below mounting height | No glare for oncoming traffic |
| Headlight angle | Horizontal, not tilted up | Road illuminated, sky dark |
| Taillight | Vertical, pointing straight back | Visible from behind |
Checking the Adjustment
After adjusting, check the light pattern on a dark road or against a wall. The check of the bicycle light adjustment should be repeated after any change to the mounting position or after replacing the light.
Frequently Asked Questions
How do I adjust my bicycle light so it doesn't blind others?
Set the cut-off line at 5 m distance about 10 cm below the mounting height. Mount the light horizontally, not tilted upward.
What is the StVZO requirement for bicycle lights?
StVZO-compliant lights have a cut-off line and a maximum mounting height. The light must not blind oncoming traffic. Check the certification mark.
How high should the bicycle light be mounted?
StVZO specifies a maximum height. A lower mounting position reduces glare. Check the manufacturer's specifications.
Does the taillight need adjustment too?
Yes. The taillight should be mounted vertically and point straight back. Check that it is visible and not blocked by luggage.
