UN R129 — Supplement 11 to the 03 series of amendments

Enhanced Child Restraint Systems of the booster seat and booster cushion categories must have only one adult safety-belt route. They must also have a main load-bearing contact point between the Enhanced Child Restraint System and the adult safety belt. Before this supplement, paragraph 6.1.3.4. did not mention the adult safety-belt route.

Paragraph 6.6.4.1.1. now says that i-Size and Universal category Enhanced Child Restraint Systems must be tested on the test bench prescribed in Annex 6. The test must be in conformity with paragraph 7.1.3.1. Before this supplement, the paragraph did not name the Universal category.

Paragraph 6.6.4.1.2. says that Specific Vehicle Enhanced Child Restraint Systems must be tested in one of the following ways. Its earlier text on the fit assessment with each vehicle model and on reducing the number of vehicle arrangements tested is deleted. Paragraph 6.6.4.1.2.1. covers Specific Vehicle ECRS that attach to the car using the adult seat belt or ISOFIX attachments that comply with paragraph 6.3.3. These must be dynamically tested on the Annex 6 test bench, in conformity with paragraph 7.1.3.1. For Specific Vehicle ISOFIX ECRS, this applies only if they have an anti-rotation device that conforms to paragraph 6.3.4. or 6.3.5. As an alternative, these Specific Vehicle ECRS can be tested in a vehicle body shell in conformity with paragraph 7.1.3.2.

Specific Vehicle ECRS that use attachment methods not defined in this Regulation must be dynamically tested in a vehicle body shell or a complete vehicle. The body shell test is in conformity with paragraph 7.1.3.2., and the complete vehicle test with paragraph 7.1.3.3. Notwithstanding paragraph 6.6.4.1.2.2.1., these tests must be carried out for each vehicle specified in the ECRS car fitting list. Specific Vehicle ISOFIX ECRS without an anti-rotation device conforming to paragraph 6.3.4. or 6.3.5. are also covered if they use the vehicle seat cushion instead. They use it to limit the pitch rotation of the ECRS in a front impact. Before this supplement, this paragraph referred to paragraph 6.3. and to the envelopes defined in UN Regulation No. 16, Annex 17.

Before the dynamic test in a vehicle body shell, the ECRS must be assessed for fit with every vehicle in the ECRS car fitting list. The Technical Service must then make sure that sufficient parts of each vehicle body shell are used in the dynamic test. These parts must be representative of the vehicle structures and impact surfaces, including the vehicle seat cushions and underlying structures. The Technical Service may also reduce the number of vehicles tested if they do not differ greatly in the aspects listed above. However, testing at simple extremes of differences in dimensions or material properties is not allowed.

New paragraph 7.1.3.1.1.8. covers frontal impact tests of a booster cushion on the test bench prescribed in Annex 6. In these tests, the technical service can decide to install an optional dummy protective device, as described in Annex 6, paragraph 3.4. The device may be covered with the Polychloropren foam of the lateral impact door (Appendix 3) or an alternative material, as the technical service decides. The forward face of the device must be parallel with the back of the backrest. The device must not interfere with the dummy and/or the adult 3-point belt during the dynamic test until the maximum horizontal head excursion is reached. New Appendix 5 to Annex 6 gives Figure 1 of the optional dummy protective device, with all dimensions in millimetres.

The title of Annex 27 is now “Type approval test report template”. Before this supplement, it was “List of Minimum Contents for The Test Reports included in the Type Approval Application”. A new entry asks for the “Test Bench Type (Test on trolley+standard seat/Test in car body)”. If testing in car body, the make/model must be specified.