If the retractor is part of a lap belt, the retracting force of the strap shall be not less than 0,7 dan when measured in the free length between the manikin and the retractor in accordance with 2.7.7.4. If the retractor is part of a diagonal strap, the retracting force of the strap shall be not less than 0,2 dan and not more than 0,7 dan when similarly measured. If the strap passes through a guide or pulley , the retracting force shall be measured in the free length between the manikin and the guide or pulley. If the assembly incorporates a device which, upon manual or automatic operation, prevents the strap from being completely retracted, such a device shall not be operated when the retracting force is assessed.
The performance criteria recorded, in accordance with Appendix 5, on the dummies in the front outboard seats must meet the following conditions ... After the impact, it must be possible, without the use of tools, except for those necessary to support the weight of the dummy: ... to release the dummies from their restraint system which, if locked, must be capable of being released by a maximum force of 60 N on the centre of the release control ...
