This document provides criteria for judgement of usability of booster seat child restraint systems (CRSs) when installing them and securing a child.




This document provides criteria for judgement of:

— ease of availability of instructions;

— clarity of instruction manual and labelling; and

— ease of use of design related features of the CRS related to the installation in a vehicle.




The procedure can also be used for evaluation of vehicle integrated booster systems.




NOTE 1 CRS includes enhanced CRS (ECRS) according to UN Regulation No. 129.




NOTE 2 Although ISOFIX is defined in the original “ISOFIX” standard (ISO 13216-1) to be a rigid system, the term “ISOFIX” in this document is extended to include flexible CRS attachments (e.g. LATCH in USA, UAS in Canada).