The article describes the system of creating legal regulations concerning the rules and conditions relating to the carriage of dangerous goods in various fields of transport: by air, sea, land (road, rail, inland waterways). The first and the second parts show the development system of the regulations. The third part is dedicated to the general principles of air transport of hazardous materials in accordance with the IATA DGR e.g.: classification, training, packaging, labeling, documentation and other duties of the participants. The fourth part describes the differences in the requirements in the field of multimodal transport of dangerous goods.