HazMat Hazardous Materials (HazMat) Endorsement Operations 2 — Questions and Answers
Question 1: Which federal agency is primarily responsible for regulating the transportation of hazardous materials by highway?
- EPA
- OSHA
- PHMSA (Correct answer)
- FMCSA
Correct answer: PHMSA
The Pipeline and Hazardous Materials Safety Administration (PHMSA) sets the HazMat regulations under the Hazardous Materials Regulations (HMR).
Question 2: What does the 'UN' prefix on a hazardous materials identification number signify?
- The material is unregulated in small quantities
- The number is internationally recognized under United Nations standards (Correct answer)
- The shipment originates outside the United States
- The material requires a unique handling procedure
Correct answer: The number is internationally recognized under United Nations standards
The 'UN' prefix indicates the four-digit identification number is internationally recognized under the United Nations system.
Question 3: When must a driver stop at a railroad crossing while transporting hazardous materials?
- Only when carrying Class 1 explosives
- Only when the load exceeds 10,000 lbs
- Always, unless a flagman signals otherwise (Correct answer)
- Only at crossings without automatic signals
Correct answer: Always, unless a flagman signals otherwise
Drivers transporting placarded HazMat must always stop at railroad-highway grade crossings between 15 and 50 feet from the nearest rail.
Question 4: What is the primary purpose of the Emergency Response Guidebook (ERG)?
- To list the fines for HazMat violations
- To provide first responders with initial guidance during HazMat incidents (Correct answer)
- To certify drivers for HazMat endorsement
- To document shipper responsibilities
Correct answer: To provide first responders with initial guidance during HazMat incidents
The ERG provides first responders with quick-reference guidance on initial actions to protect themselves and the public during hazardous materials incidents.
Question 5: Which of the following materials is classified as a Division 2.1 hazard?
- Non-flammable compressed gas
- Flammable gas (Correct answer)
- Toxic gas
- Oxidizing gas
Correct answer: Flammable gas
Division 2.1 covers flammable gases such as propane and hydrogen.
Question 6: How many copies of shipping papers must a driver have when transporting hazardous materials?
- One copy kept in the cab
- One copy for the driver and one for the shipper
- As many as the number of materials being shipped
- Enough copies as required by the carrier and destination regulations (Correct answer)
Correct answer: Enough copies as required by the carrier and destination regulations
The driver must have the correct shipping papers as required, with the originals available for inspection by authorities and kept within reach while driving.
Question 7: What action must a driver take if a hazardous materials leak is discovered during a trip?
- Continue driving to the nearest repair shop
- Stop immediately and call 911 only if the leak is large
- Park away from people and buildings, do not move the vehicle further, and call for help (Correct answer)
- Reduce speed and proceed to the nearest weigh station
Correct answer: Park away from people and buildings, do not move the vehicle further, and call for help
Upon discovering a leak, the driver must park safely away from people and structures and contact emergency responders without moving the vehicle further.
HazMat Hazardous Materials (HazMat) Endorsement Operations 2
Which federal agency is primarily responsible for regulating the transportation of hazardous materials by highway?