TDG is based on regulations from which international organization?

The correct answer is that TDG regulations are based on standards developed by the United Nations. Specifically, the UN provides a framework through the United Nations Recommendations on the Transport of Dangerous Goods, often referred to as the Orange Book. This framework outlines the classification of dangerous goods, packaging requirements, and labeling standards, which are essential for ensuring safe transport practices globally.

The emphasis on the United Nations is due to its role in facilitating international cooperation and standardization in various fields, including transportation safety. By adhering to these guidelines, countries can implement national regulations aligned with international standards, promoting safety and efficiency in the transport of hazardous materials across borders.

The other organizations mentioned have distinct focuses. The International Maritime Organization is primarily concerned with maritime safety and shipping regulations, particularly related to maritime transport. The World Health Organization focuses on public health rather than transport regulations. The International Standards Organization deals with a broader range of technical and quality standards but does not specifically govern transportation of dangerous goods. Thus, their scopes do not encompass the specific regulatory framework for TDG.