Width. The minimum width at the child-restraint straps which contact the dummy shall be 25 mm. These dimensions shall be measured during the strap strength test prescribed in paragraph 7.2.5.1. below, without stopping the machine and under a load equal to 75 per cent of the breaking load of the strap. Strength after room conditioning 5.1.2. below. The difference between the breaking loads of the two samples shall not exceed 10 per cent of the greater of the two breaking loads measured. Strength after special conditioning On two straps conditioned as prescribed in one of the provisions of paragraph 7.2.5.2. below (except para. 7.2.5.2.1. below), the breaking load of the strap shall be not less than 75 per cent of the average of the loads determined in the test referred to in paragraph 7.2.5.1. below. In addition, the breaking load shall be not less than 3.6 kN for the restraints of i-Size Enhanced Child Restraint Systems. The Type Approval Authority may dispense with one or more of these tests if the composition of the material used, or information already available, renders the test or tests superfluous. 2.5.1. above. It shall not be possible to pull the complete strap through any adjusters, buckles or anchoring points. ISOFIX attachment specifications "ISOFIX attachments" and latching indicators shall be capable of withstanding repeated operations and shall, before the dynamic test prescribed in paragraph 7.1.3. below, undergo a test comprising 2,000 ± 5 opening and closing cycles under normal conditions of use. ISOFIX attachments and latching indicators shall be capable of withstanding repeated operations and shall, before the dynamic test prescribed in paragraph 7.1.3. of this Regulation, undergo a test comprising 2,000 ± 5 opening and closing cycles under normal conditions of use. ISOFIX attachments shall have a locking mechanism which complies with the requirements specified in (a) or (b) as follows: Release of the locking mechanism of the complete seat, shall require two consecutive actions, the first of which should be maintained while the second is carried out; or The ISOFIX attachment opening force shall be at least 50 N when tested as prescribed in paragraph 7.2.8. below.
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Samples: Regulation No. 129, Regulation No. 129, Regulation Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles