Historical
ISO 6742-2:1985
Cycles - Lighting and retro-reflective devices - Photometric and physical requirements - Part 2 : Retro-reflective devices
This part of ISO 6742 specifies general requirements for retro-reflective devices for fitting to cycles intended to be used on public roads. Such retro-reflective devices are effective in conditions of poor visibility and at night in helping to make all road users aware of the presence of a cyclist.
International Organization for Standardization [iso]