Since 1961, IAEA Transport Regulations have been used worldwide by industry, competent authorities and international organizations. While the provisions of the Regulations are essentially clear and unambiguous, they are often also highly technical in nature and unavoidably complex. Therefore, there is a need for this publication that supplements the Regulations by providing specific information on individual consignments, to help users to identify the applicable requirements. It assists users in complying with the safety standards prescribed in the IAEA Transport Regulations.