Oh sorry, I missed your condition.  When I mentioned the clothing that was glowing under light from the sun, that just suggests to me that it might also glow in low light condition if you were wearing it.  I guess it’s only in the dark conditions that the clothing would glow under light.
assitant
OK, so if we are talking about conditions in which it might be hard to see on a bicycle, how bright would you need the clothing to be?
assistant
What safety gears should you wear if you ride a bicycle in low light or low visibility condition?
user
A simple way to start is to wear a bright colored reflective clothing such as yellow or red and to wear a lighted helmet.  You can also wear reflective clothing such as bright yellow or red jackets, reflective safety vests, or even glow stick necklaces or bracelets.  A more advanced safety feature to look into would be clothing made out of a material called “Solar-Activated Visible Light”.  It’s a fabric that looks white in normal light but turns dark when it gets a bit of light from the sun.
assistant
I don't think that "solar-activated visible light" clothing would work because I mentioned it's for low light condition. Everything else sound reasonable.
user