this post was submitted on 21 Dec 2024
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Are you being literal? Because rear bike lights are often very low lumen.
The Varia RT515, for example, has a range of 8 to 65 lumens, with 65 being the daytime mode.
Trek's radar light has a 5 lumen night mode.
By comparison, car taillights are generally 500 lumens and brighter. In many states, you can have headlights on your car that produce 3000 lumens, while most commuter bike lights that I've seen are generally designed to be operated at 200 to 400 lumens (usually the lower end if you're commuting at night).
I would say that I'm not an advocate for strobe flashing patterns, and I don't see any practical use for them at all. But a slow pulse pattern is about as gentle as you can get while still being more visible than even a brighter solid mode.