Hazardous Materials (HazMat) Endorsement Exam — Questions and Answers

Question 1: What does a white square-on-point (diamond) placard with the number '7' and a propeller symbol represent?

Radioactive material (Correct answer)
Flammable solid
Oxidizer
Poison gas

Correct answer: Radioactive material

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

Question 2: How many classifications are there in Class 5 - Oxidizing Substances?

8
13
2 (Correct answer)
5

Correct answer: 2

Class 5, which covers Oxidizing Substances and Organic Peroxides, is divided into two distinct divisions. Division 5.1 includes Oxidizing Substances, which can cause or contribute to the combustion of other materials. Division 5.2 comprises Organic Peroxides, which are thermally unstable and prone to exothermic decomposition. These two divisions represent different but related hazards within the class.

Question 3: What does packing group I indicate about a hazardous material?

The material is forbidden
Medium danger
Minor danger — lowest hazard level
Great danger — highest hazard level (Correct answer)

Correct answer: Great danger — highest hazard level

Packing Group I indicates the highest level of danger, requiring the most stringent packaging standards for that hazardous material.

Question 4: What is a 'hazardous materials manifest' or 'bill of lading' required to include?

Only the UN number
Only the shipper's name
Driver's license number and cargo weight
Proper shipping name, hazard class, ID number, packing group, and quantity (Correct answer)

Correct answer: Proper shipping name, hazard class, ID number, packing group, and quantity

HazMat shipping papers must include the proper shipping name, hazard class or division, ID number, packing group (if applicable), and total quantity.

Question 5: What does CHEMTREC provide to drivers and emergency responders?

Route planning assistance
Driver licensing records
24-hour chemical emergency response information and technical guidance (Correct answer)
HazMat permit processing

Correct answer: 24-hour chemical emergency response information and technical guidance

CHEMTREC (Chemical Transportation Emergency Center) provides 24/7 emergency response information and technical assistance for chemical incidents.

Question 6: Where must the emergency response telephone number appear on shipping papers?

Only on the bill of lading, not the manifest
It is optional if CHEMTREC is listed
On the first page in association with the HazMat description (Correct answer)
On the placard attached to the trailer

Correct answer: On the first page in association with the HazMat description

The emergency response telephone number must appear on the first page of the shipping papers, either before or after the HazMat description or in a prominent location on that page.

Question 7: What does a leakproofness test (hydraulic pressure test) verify for liquid HazMat packaging?

The package can withstand internal pressure without leaking or deforming (Correct answer)
The package can support the required stacking weight without collapsing
The package can endure extreme temperature changes during refrigerated transport
The package can survive puncture from sharp objects in mixed cargo

Correct answer: The package can withstand internal pressure without leaking or deforming

The leakproofness test applies internal air or water pressure to verify that the package and its closures maintain integrity and do not allow any leakage under pressurized conditions.

Question 8: What is required when transporting Division 1.1 or 1.2 explosives?

EXPLOSIVES 1.1 or 1.2 placard plus a DANGEROUS placard on the rear
Standard placard is sufficient
Specific EXPLOSIVES 1.1 or 1.2 placard and no other class placard (Correct answer)
EXPLOSIVES A or B placard plus a written permit

Correct answer: Specific EXPLOSIVES 1.1 or 1.2 placard and no other class placard

Division 1.1 and 1.2 explosives require specific placards (EXPLOSIVES 1.1 or EXPLOSIVES 1.2) and regulations prohibit using a DANGEROUS placard for these materials.

Question 9: What is a 'reportable quantity' (RQ) in hazardous materials transportation?

The minimum amount of HazMat that triggers placard requirements
The amount of a hazardous substance that triggers special reporting requirements under EPA regulations (Correct answer)
The maximum load allowed for a single shipment
The quantity that requires a hazmat team standby during loading

Correct answer: The amount of a hazardous substance that triggers special reporting requirements under EPA regulations

A reportable quantity is the threshold amount of a hazardous substance that, if released, must be reported to federal authorities.

Question 10: When a HazMat spill occurs, which direction should you move relative to the wind?

Downwind so you can monitor vapors
The wind direction does not matter
Crosswind at a 90-degree angle
Upwind to avoid inhaling vapors (Correct answer)

Correct answer: Upwind to avoid inhaling vapors

Always move upwind from a HazMat spill to avoid exposure to hazardous vapors, gases, or airborne particles.

Question 11: Potential places for terrorist or criminal targets

Public places of assembly
Option all the above (Correct answer)
Rail yards
industrial areas

Correct answer: Option all the above

Terrorist or criminal organizations often target locations that offer high visibility, potential for mass casualties, significant economic disruption, or critical infrastructure damage. Public places of assembly, industrial areas with hazardous materials, and rail yards (for transportation disruption or chemical spills) all fit these criteria. Therefore, all listed options represent potential targets for such activities.

Question 12: What is a HazMat security plan required to address?

Personnel security, unauthorized access, and en-route security (Correct answer)
Route optimization
Fuel cost management
Vehicle maintenance schedules

Correct answer: Personnel security, unauthorized access, and en-route security

A HazMat security plan must address personnel security screening, preventing unauthorized access to HazMat, and security procedures during transport.

Question 13: What information does the ERG's orange-bordered pages provide?

Vehicle inspection checklists
List of approved HazMat carriers
State-by-state routing regulations
Potential hazards and emergency response actions for a specific material (Correct answer)

Correct answer: Potential hazards and emergency response actions for a specific material

The orange-bordered pages in the ERG provide the potential hazards and initial emergency response actions for specific hazardous materials.

Question 14: Which of the following materials is classified as a Division 2.1 hazard?

Non-flammable compressed gas
Toxic gas
Flammable gas (Correct answer)
Oxidizing gas

Correct answer: Flammable gas

Division 2.1 covers flammable gases such as propane and hydrogen.

Question 15: What is the primary purpose of keeping shipping papers accessible during a HazMat emergency?

To allow first responders to identify the materials and take appropriate action (Correct answer)
To show customs documentation
To calculate insurance claims
To prove ownership of the cargo

Correct answer: To allow first responders to identify the materials and take appropriate action

Accessible shipping papers allow emergency responders to quickly identify what materials are present and determine the correct protective and mitigation actions.

Question 16: Which of these DOES NOT constitute a chemical's likely physical hazard?

Acute (Correct answer)
Corrosive
Reactive
Flammable

Correct answer: Acute

'Acute' refers to a health effect—the speed and severity of harm to the body—not a physical hazard of the chemical itself. Flammability, corrosivity, and reactivity are all intrinsic physical hazards, which is why 'acute' is the one that does not belong.

Question 17: Which statement about loading oxygen and flammable gas in the same vehicle is correct?

They may be loaded together without restriction
Only small cylinders can be co-loaded
They may never be transported in the same vehicle under any circumstances
They require a minimum separation distance or approved barrier between them (Correct answer)

Correct answer: They require a minimum separation distance or approved barrier between them

Oxygen and flammable gases may be transported together only with adequate separation or a certified barrier to prevent contact in the event of a leak.

Question 18: What must you check before loading hazardous materials?

The shipper's credit rating
That the packages are properly labeled, marked, and in good condition (Correct answer)
Only the weight of the cargo
Only that the paperwork is complete

Correct answer: That the packages are properly labeled, marked, and in good condition

Before loading, drivers must inspect all HazMat packages to confirm they are properly labeled, correctly marked, and in good condition with no leaks or damage.

Question 19: Prior to 2002, the bar was yellow; it is now orange to indicate

Health Hazard
Physical Hazard (Correct answer)
Special Hazard Information
Flammability Hazard

Correct answer: Physical Hazard

Prior to 2002, the bar on hazardous material labels was yellow. However, it is now orange to indicate "Physical hazard." In the hazard communication system used for labeling hazardous materials, such as those used in the workplace or for transportation, hazard warning labels are standardized to convey specific information about the hazards of the substances. These labels are typically affixed to containers, packages, or equipment that contain or transport hazardous materials.

Question 20: What does 'stow away from living quarters' mean on a segregation table?

The material requires outdoor storage only
Ensure the material is not placed near the driver's cab or any occupied space (Correct answer)
The material must be shipped in a refrigerated unit
Keep the material at the front of the trailer

Correct answer: Ensure the material is not placed near the driver's cab or any occupied space

Stow away from living quarters means the hazardous material must be kept separated from the cab and any space where people are present during transport.

Question 21: What is the minimum distance a placarded vehicle must stay from an open fire?

50 feet
300 feet (Correct answer)
100 feet
200 feet

Correct answer: 300 feet

Drivers must not park placarded vehicles within 300 feet of an open fire.

Question 22: Which federal agency must be notified when a hazardous materials incident results in a reportable spill?

FMCSA
EPA only
National Response Center (NRC) (Correct answer)
OSHA

Correct answer: National Response Center (NRC)

The National Response Center (NRC), operated by the U.S. Coast Guard, is the federal point of contact for reporting HazMat incidents and spills.

Question 23: Which of the following ways must the hazardous materials be listed if a shipping paper lists both hazardous and non-hazardous goods?

The hazardous materials must be described first
The hazardous materials must be highlighted in a contrasting color
All of the above (Correct answer)
The hazardous materials must be identified by an “X” placed before the shipping name in a column captioned “HM.” The letters “RQ” may be used instead of “X” if a reportable quantity is present in one package

Correct answer: All of the above

Hazardous materials must be listed in one of the following ways if a shipping paper lists both hazardous and non-hazardous goods: first described colored differently to stand out It can be recognized by an "X" before the shipping name in the "HM" column. If a reportable quantity is present in a package, the letter "RQ" may be used in place of the letter "X."

Question 24: What is the Emergency Response Guidebook (ERG) used for?

Filing hazmat permits
Documenting cargo weight
Providing initial action guidance during a HazMat incident (Correct answer)
Tracking shipment routes

Correct answer: Providing initial action guidance during a HazMat incident

The ERG provides first responders and drivers with initial guidance on protecting themselves and the public during a hazardous materials transportation incident.

Question 25: Which hazard class requires the use of Type A or Type B packages based on the radioactivity level of the material?

Class 7 — Radioactive materials (Correct answer)
Class 6 — Toxic substances
Class 8 — Corrosive materials
Class 9 — Miscellaneous hazardous materials

Correct answer: Class 7 — Radioactive materials

Class 7 (radioactive materials) mandates specific package types — Type A, Type B, or Type C — determined by the activity level of the radioactive contents.

Question 26: What does it mean when HazMat packages show the marking 'KEEP AWAY FROM HEAT'?

Standard shipping instruction with no special significance
The material can decompose, ignite, or react dangerously when exposed to elevated temperatures (Correct answer)
The package contains perishable biologics only
The material is temperature-controlled food

Correct answer: The material can decompose, ignite, or react dangerously when exposed to elevated temperatures

KEEP AWAY FROM HEAT means the material is heat-sensitive and can decompose, ignite, or undergo dangerous reactions if exposed to elevated temperatures.

Question 27: What does the term 'forbidden' mean when applied to a hazardous material?

The material cannot cross state lines
The material requires a special permit to ship
The material may not be transported under any circumstances (Correct answer)
The material is restricted to rail only

Correct answer: The material may not be transported under any circumstances

A 'forbidden' hazardous material is one that the regulations prohibit from being transported in commerce under any conditions.

Question 28: Which of the following is true about loading foodstuffs with hazardous materials?

It is allowed if packaging is sealed
There are no restrictions on loading foodstuffs with HazMat
Foodstuffs may be loaded with any HazMat as long as they are wrapped
Certain hazardous materials are forbidden to be loaded with foodstuffs (Correct answer)

Correct answer: Certain hazardous materials are forbidden to be loaded with foodstuffs

Federal regulations prohibit loading certain hazardous materials — particularly poisons and corrosives — with human food or animal feed.

Question 29: What is a 'Hazardous Waste Manifest' required for?

Any cargo weighing over 5,000 lbs
Crossing state lines with any HazMat
Transporting materials listed as hazardous wastes under EPA regulations (Correct answer)
Transporting used cooking oil

Correct answer: Transporting materials listed as hazardous wastes under EPA regulations

A Uniform Hazardous Waste Manifest (EPA Form 8700-22) is required when transporting materials designated as hazardous wastes under EPA RCRA regulations.

Question 30: You are transporting Division 1.1 explosives. Which route must you take?

Any interstate avoiding tunnels
The route with the fewest traffic lights
The fastest highway route available
A pre-approved route or the route specified by your carrier (Correct answer)

Correct 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.

Question 31: You are hauling hazmat and approach a tunnel. What should you do?

Proceed through if the tunnel is ventilated
Increase speed to minimize time in the tunnel
Turn off the engine and coast through
Check whether hazmat vehicles are permitted in that tunnel (Correct answer)

Correct answer: Check whether hazmat vehicles are permitted in that tunnel

Many tunnels prohibit certain hazardous materials, so you must check local restrictions before entering any tunnel.

Hazardous Materials (HazMat) Endorsement Exam

The HazMat endorsement exam is required for commercial drivers who transport hazardous materials, ensuring they understand regulations and safe handling procedures.

Questions

30 min

Time Limit

80%

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