The requirements of paragraphs 5.1 to 5.6 of UN Regulation No 21 may be waived at the request of the manufacturer.
Féadfar ceanglais mhír 5.1 go mír 5.6 de Rialachán Uimh. 21 de chuid NA a tharscaoileadh arna iarraidh sin ag an monaróir.