What are the three major categories of substances for tanker trucks?

[DiEmery]

Class III hazardous materials include flammable liquids such as diesel, gasoline, paint, acetone, kerosene, ethanol, and sulfur dioxide. Operating a hazardous material transport vehicle requires holding a 'Hazardous Materials Professional Qualification Certificate'. The following are the requirements for transport vehicles: 1. Box trucks for transporting gases: Box trucks transporting bottled compressed gases and liquefied gases must be equipped with ventilation devices and securing devices. 2. Special vehicles for transporting flammable and explosive materials: Special vehicles for transporting flammable and explosive materials must all be fitted with conductive rubber grounding straps that meet regulatory standards. 3. Vehicles for transporting horizontally placed bottled compressed gases: Special vehicles transporting horizontally placed bottled compressed gases and liquefied gases must have internal compartment widths that meet the length dimensions of the cylinders; otherwise, the vehicle must be replaced to meet transport requirements. 4. Vehicles for transporting oxides: Oxidizers and organic peroxides must be transported using temperature-controlled box-type special vehicles.