Annex 18 Specifies the board standards and recommended practices to be followed to enable dangerous goods to be carried safely. The annex contains fairly stable material requiring only infrequent amendment using the normal Annex amendment process. The Annex also makes binding upon contracting states the provisions of the technical Instructions, which contain the very detailed and numerous instructions necessary for the correct handling of dangerous cargo. These require frequent updating as developments occur in the chemical manufacturing and packaging industries and a special procedure has been established by council to allow the Technical Instructions to be revised and reissued regularly to keep up with the new products and advances in technology.