Ultimate CDL Hazardous Materials (HazMat) Endorsement Flashcards

Which federal agency primarily regulates the transportation of hazardous materials on public highways?

Answer: PHMSA

The Pipeline and Hazardous Materials Safety Administration (PHMSA) sets the regulations for hazmat transport, while FMCSA enforces them for commercial vehicles.

A shipper gives you a shipping paper with a material listed as 'UN1203, Gasoline, 3, PG II.' What does 'PG II' indicate?

Answer: The material is in Package Group 2, meaning moderate danger

Packing Group II (PG II) indicates a moderate degree of danger for the hazardous material.

When transporting hazmat, how far from the nearest rail must you stop at a railroad crossing?

Answer: 15 to 50 feet

HazMat vehicles must stop between 15 and 50 feet from the nearest rail at all railroad crossings.

Which of the following is NOT one of the nine DOT hazard classes?

Answer: Heavy machinery

Heavy machinery is not a DOT hazard class; the nine classes cover explosives, gases, flammables, oxidizers, toxics, infectious substances, radioactives, corrosives, and miscellaneous.

You are transporting Division 1.1 explosives. Which route must you take?

Answer: A pre-approved route or the route specified by your carrier

Division 1.1, 1.2, and 1.3 explosives require a pre-approved route or the route designated by your employer.

What does a white square-on-point (diamond) placard with the number '7' and a propeller symbol represent?

Answer: Radioactive material

Class 7 placards with the trefoil (propeller) symbol identify radioactive materials.

If a hazardous material spills from your vehicle, what is your FIRST priority?

Answer: Protect people from the hazard and call for help

Your first priority is always to protect people by keeping them away from the hazard and alerting emergency responders.