Alcance
                            ISO 29061-3:2017 specifies the criteria for judgement of usability of child restraint systems (CRS) when installing them with the vehicle seat belts.ISO 29061-3:2017 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.NOTE       Booster system usability evaluation is covered by ISO 29061-5.