How is "hazardous waste" defined in relation to TDG?

The definition of "hazardous waste" in relation to the Transportation of Dangerous Goods (TDG) specifically focuses on waste materials that are classified as dangerous goods due to their potential to pose significant health or environmental risks. This definition is critical in ensuring that any waste that has properties potentially harmful to humans or the environment is managed appropriately and safely during transport. Recognizing hazardous waste as dangerous goods enables regulatory frameworks to enforce specific handling, storage, and transportation requirements designed to mitigate risks associated with such materials.

The other options provide definitions that do not align with the established criteria for hazardous waste. Non-hazardous materials disposed of improperly do not meet the criteria for classification as hazardous waste. General waste materials requiring recycling are unrelated to the specific hazards associated with dangerous goods. Lastly, materials considered safe for transport without regulation do not fall under the category of hazardous waste, which requires stricter handling due to their risk profile.