In 1957 the U.K signed an international treaty called 'Accord Europeen relatif au transport international des marchandise dangereuses par route' (European agreement concerning the international carriage of dangerous goods by road). This is known as "ADR" and its purpose is to provide a standardised and internationally recognised means of protecting human health and the environment from the dangers posed by the transport of dangerous goods. The requirements of "ADR" are implemented via Carriage of Dangerous Goods (Classification, Packaging, Labeling) Regulations 1996 . The Carriage of Dangerous Goods by Road Regulations 1996. At this time Clinical Waste became subject to these regulations although it is important to understand that 'Sanpro' wastes, i.e. products of human hygiene, are not considered to be Clinical Waste for the purposes of these regulations (see para 90 Approved Requirements and test methods for the classification and packaging of dangerous goods for transport).