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I tried to buy one from Amazon but after testing it today the beam is clearly symmetrical and has no advantages over a normal bike light. I live in the UK so the StVZO regulation is not one which I have to comply with but I feel it is part of being a responsible road user. I'm open to the idea of having one that mount son my helmet.

  • Did you want a dynamo or battery power light? stVZO compliance is more common for dynamo powered lights, although supernova and B&M makes stVZO compliant lights in both formats. – Rider_X Mar 28 '17 at 17:10
  • On quick search at least Sigma, Cat Eye, Axa, Garmin, Knog and BBB could be added to the list. And that's just from one store. – ojs Mar 28 '17 at 17:43
  • @Rider_X I was looking for USB stVZO lights – usainlightning Mar 28 '17 at 18:11
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If you live in UK, you should have no problem ordering from Germany. The mail order houses there sell mostly lights that are street legal in their home country, and label non-compliant lights as off road only.

EDIT: The above goes for bike-mounted lights. Helmet-mounted lights do not seem to be under the same regulation.

If you absolutely must buy from UK, you can look up models on German sites and see if they are available in UK. Although, UK and continental Europe seem to be strangely separate markets even if they are in the same customs union.

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    I don't think helmet mounted lights can ever be stVZO compliant because one only has to tilt one's head to blind on-coming pedestrians and cars. – RoboKaren Mar 28 '17 at 21:47
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    "UK and continental Europe seem to be strangely separate markets even if they are in the same customs union." Don't worry. This apparent contradiction will go away soon. *sigh* – David Richerby Mar 29 '17 at 14:10
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The StVO laws for bicycle lights only define the minimum Voltage and some attributes like: "The Rear Light should not be able to blink".

The StVO should be updated to use Lumen instead of Voltage among other changes, and this might happen soon with Light Manufactors lobbying for these changes.

However, the StVO says very little about the quality of a light, it's visibility for other road users or the ability to help you with vision while riding.

It would be wiser to look for a Light with a beam that does not glare in the direction of the opposite traffic, is visible from the sides and bright enough to light your way.

Reading reviews might help you more than relying on years old german legislation.

We might be known for our accuracy and efficiency but not for our reasonable traffic laws.

  • Good point about lumens. I thought it was kind of obvious but yes, any light that is dim enough probably passes. I doubt the voltage regulations are taken seriously because for LEDs the input voltage and drive voltage can be anything. – ojs Mar 29 '17 at 18:20

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