Where the failure of any such part would be likely to result in loss of control of the vehicle, that part shall be made of metal or of a material with equivalent characteristics and shall not be subject to significant distortion in normal operation of the steering system.
Dans le cas des remorques, il doit également être satisfait aux prescriptions des paragraphes 5.2.2 et 6.3.4.1 en cas de défaillance du système de direction.