Originally Posted by
AcornMan
How many lumens are appropriate for a flashing “headlight” for daytime visibility? I used quotation marks because it doesn’t need to be bright enough to illuminate the street/trail in darkness. I just want to make sure cars see me during the day. I picked up a 300 lumen light from REI but it seems much too bright.
the small front white/rear red LED blinkers I use are supposed to be 80 lumens. They’re certainly bright enough in overcast or rainy conditions. In bright sunlight I think they could be a bit brighter. I think you could go to 100-120 without causing drivers to (1) have epileptic seizures, (2) become disorientated and run into you, or (3) scream “My Eyes!!!!” and crash into something because your little blinkers blinded them. According to the occasional, and frequently contentious, discussions on this forum, these are frequent consequences of flashing lights on bicycles.