German bicycle lighting standard written by non-cyclists designed to force cyclists to subject themselves to increased danger by requiring the use of sub-optimal bicycle lighting systems.
"Dude, your lights suck, no one can see you coming and you just ran into a low hanging tree branch."
"Sorry, I have decided to comply with the StVZO standard which is much more important than seeing or being seen."
"Dude, dump the StVZO lights and buy a good light."
"Never, the German way is the only way."
The tendency of Chinese manufacturers of bicycle lights and flashlights to claim an artificially high light output. This has necessitated the creation of a new measurement unit, the chilumen or "Chinese Lumen," which has a variable conversion factor to actual lumens.
"I just bought a 10,000 lumen flashlight for $7.99 including shipping from Shenzhen China."
"You're a victim of lumenflation. That flashlight is 10,000 chilumens, not 10,000 lumens."
A measurement unit of light invented by Chinese manufacturers of bicycle lights and flashlights. Also known as "Chinese lumens." One chilumen is usually equal to about 1/2 to 2/3 of a regular lumen. If a product's luminosity is advertised with the disclaimer of "manufacturer rated" then the lumen rating is actually in chilumens.
"I just bought a 5000 lumen light for my bike."
"Man, no way is that light 5000 lumens, it's 5000 chilumens."