In vehicle inspection terminology, what does 'HM' represent?

In vehicle inspection terminology, 'HM' refers to Hazardous Materials. This designation is crucial in the context of commercial vehicle inspections because it identifies materials that pose a risk to health, safety, or the environment during transportation. Understanding the implications of handling hazardous materials is essential for ensuring compliance with safety regulations and protecting both the vehicle occupants and the public. Proper identification and management of these substances are critical components of transportation safety protocols, as they require specific handling procedures, safety measures, and documentation to mitigate risks associated with their transport.