ISO 29061-5:2017提供了在安装和固定儿童时，判断儿童约束系统（CRS）可用性的标准。 ISO 29061-5:2017提供了以下判断标准: -易于获得指令； -说明手册和标签的清晰性；和 -易于使用与车辆安装相关的CRS设计相关功能。 该程序也可用于评估车辆集成助力器系统。 注:虽然最初的“ISOFIX”标准（ISO 13216-1）将ISOFIX定义为一个刚性系统，但本文件中的术语“ISOFIX”扩展为包括柔性CRS附件（闩锁、UAS）。

ISO 29061-5:2017 provides criteria for judgement of usability of booster seat child restraint systems (CRS) when installing them and securing a child. ISO 29061-5:2017 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 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 (LATCH, UAS).