Pitch black, need to see the road, by * will be needing more,
Than streets lighted, in the city.. a 'be seen' and flashing lights..
* even then the white line on the edges of the pavement can be seen at the speed a bicycle is going,
without turning night into daylight..
a light source closer to the surface bring lit appears brighter.. aka foot-candlepower.
I do not own this brand
https://cygolite.com/product/ any of it.. happy shopping..
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