ISO 6742-4:2015 is applicable to lighting systems used on cycles intended to be used on public roads and, especially, bicycles complying with ISO 4210 and ISO 8098.
ISO 6742-4:2015 specifies requirements and test methods for the performance of lighting systems powered by the cycle's movement. It applies to light devices complying with ISO 6742-1. Lighting systems include lighting devices and power supplied by cycle's movement such as generator.