This document specifies requirements for child seats intended to be mounted on cycles and electrical power assisted cycles with a cut off speed of up to 25 km/h (i.e. according to EN 15194), their attachment system and accessories intended to be attached to the seat in order to transport children with a weight from 9 kg up to 22 kg and who are capable of sitting unaided. NOTE 1 Some European countries have special legislation for child seats for cycles. Compliance with this document might not meet this legislation. NOTE 2 Where a child seat or any part of the child seat has several functions or can be converted into another function, other relevant standards might be applicable. NOTE 3 Additional rationales are presented in Annex E for inclusion of some of the requirements given in this document.