Hazardous Materials (HazMat) Endorsement Exam — Questions and Answers

Question 1: Under FMCSA regulations, who is ultimately responsible for ensuring HazMat shipping papers are correct?

The shipper (Correct answer)
The driver
FMCSA inspectors
The receiving company

Correct answer: The shipper

The shipper is legally responsible for properly classifying, describing, packaging, marking, labeling, and preparing shipping papers for hazardous materials.

Question 2: Which type of HazMat packaging consists of an inner receptacle placed inside protective outer packaging?

Salvage packaging
Bulk packaging
Combination packaging (Correct answer)
Single packaging

Correct answer: Combination packaging

Combination packaging consists of an inner receptacle (the primary container) protected by outer packaging, providing two layers of containment.

Question 3: The flash point of a flammable liquid is less than 141 degrees (F)

True (Correct answer)
False

Correct answer: True

According to OSHA and DOT regulations, a flammable liquid is defined as any liquid having a flash point below 100°F (37.8°C). Since 100°F is less than 141°F, any liquid classified as flammable will inherently have a flash point less than 141°F. Therefore, the statement is true, as the definition of a flammable liquid falls within this temperature range.

Question 4: If you are involved in a HazMat accident, when must you notify local authorities?

Only if someone is injured
Immediately (Correct answer)
Within 24 hours
Only if the spill exceeds 100 gallons

Correct answer: Immediately

Any HazMat accident must be reported to local authorities immediately regardless of the size of the incident.

Question 5: When transporting a small amount of HazMat that does not require a placard, what must still be displayed?

An orange panel
A HAZMAT sign on the rear
Proper shipping name and UN number markings on packages (Correct answer)
Nothing is required

Correct answer: Proper shipping name and UN number markings on packages

Even when placards are not required, packages must still have proper shipping name, hazard class, and UN/NA identification number markings.

Question 6: Which markings must appear on a non-bulk package containing hazardous materials?

The carrier's DOT registration number
Only the shipper's address and phone number
Only the hazard class diamond label
The proper shipping name and UN or NA identification number (Correct answer)

Correct answer: The proper shipping name and UN or NA identification number

Non-bulk HazMat packages must be marked with the proper shipping name and the UN or NA identification number as required by 49 CFR Part 172.

Question 7: What should a driver do if a small amount of HazMat leaks from a package during transport?

Transfer the cargo to another container
Stop safely, do not touch the material, and call for assistance (Correct answer)
Wipe it up and continue driving
Open windows and drive faster to disperse vapors

Correct answer: Stop safely, do not touch the material, and call for assistance

A driver must stop safely, avoid contact with the leaking material, and call for professional assistance — never attempt to handle unknown leaking HazMat.

Question 8: What information is NOT required on a basic HazMat shipping paper entry?

Proper shipping name
Quantity and type of packaging
Driver's CDL number (Correct answer)
Hazard class or division

Correct answer: Driver's CDL number

The driver's CDL number is not part of the required HazMat shipping paper entry; the required elements are the UN/NA number, proper shipping name, hazard class, packing group, and quantity.

Question 9: What does the shipper's certification on a HazMat bill of lading declare?

The vehicle has passed inspection
The cargo weight has been verified
Insurance coverage is in effect
The materials are properly classified, packaged, marked, labeled, and in proper condition for transport (Correct answer)

Correct answer: The materials are properly classified, packaged, marked, labeled, and in proper condition for transport

The shipper's certification is a legal declaration that the HazMat has been properly classified, packaged, marked, and labeled according to federal regulations.

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
Upwind to avoid inhaling vapors (Correct answer)
Crosswind at a 90-degree angle

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: The Hazardous Materials Table's entries are displayed in what ways?

In order of risk
In order of quantities being shipped
In alphabetical order by proper shipping names (Correct answer)
In alphabetical order by brand names

Correct answer: In alphabetical order by proper shipping names

The Hazardous Materials Table's entries are displayed in alphabetical order by proper shipping names. <br> <br> The Hazardous Materials Table (HMT) is a comprehensive list that provides essential information about hazardous substances or dangerous goods used in transportation and shipping. It is used to identify and classify hazardous materials during transportation to ensure proper handling, labeling, and safety measures.

Question 12: What additional cues might point to the presence of dangerous materials?

Sight
Sound
All of the above (Correct answer)
Odours

Correct answer: All of the above

Responders should be alert to all sensory cues that might indicate the presence of hazardous materials. This includes visual cues (e.g., placards, labels, smoke, spills, unusual containers), auditory cues (e.g., hissing from a leaking cylinder, alarms), and olfactory cues (e.g., unusual or strong chemical smells). Relying on multiple cues helps in early detection and accurate assessment of a HazMat incident, ensuring a safer and more effective response.

Question 13: What must you do before loading or unloading flammable liquids?

Open all cargo doors fully
Turn off the engine, set the parking brake, and ground the vehicle (Correct answer)
Notify the fire department
Park on a level surface only

Correct answer: Turn off the engine, set the parking brake, and ground the vehicle

Before loading or unloading flammable liquids, turn off the engine, set the parking brake, and ensure the vehicle is properly grounded to prevent static ignition.

Question 14: What is a 'proper shipping name' for hazardous materials?

The chemical formula of the substance
The name the driver uses to describe the cargo
The standardized name listed in the DOT Hazardous Materials Table used on all regulatory documents (Correct answer)
The trade name or brand name of the material

Correct answer: The standardized name listed in the DOT Hazardous Materials Table used on all regulatory documents

The proper shipping name is the specific, standardized name found in the DOT Hazardous Materials Table (49 CFR 172.101) that must appear on all shipping documents and packages.

Question 15: Hazard communication training is required to be given to new employees within the first 30 days of their employment.

True
False (Correct answer)

Correct answer: False

Hazard communication training is required to be given to new employees before or at the time they are exposed to hazardous chemicals in the workplace, not necessarily within the first 30 days of their employment. The specific timing of the training may vary depending on the regulations and requirements of the relevant government agencies or occupational safety standards.

Question 16: Which of the following is an example of a Division 6.1 material?

Arsenic trioxide (Correct answer)
Sodium hydroxide
Ammonium nitrate
Acetylene

Correct answer: Arsenic trioxide

Division 6.1 covers toxic (poisonous) materials; arsenic trioxide is a classic example, while the others are classified as flammable gas, corrosive, and oxidizer respectively.

Question 17: What does the term 'forbidden' mean when applied to a hazardous material?

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

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 18: The colors make up the NFPA 704 logo.

Black, red, white, yellow
Red, blue, yellow, white (Correct answer)
Orange, blue, white, green
Orange, blue, white, green

Correct answer: Red, blue, yellow, white

The NFPA 704 hazard diamond uses four distinct colors to communicate different types of hazards. Red indicates flammability, blue represents health hazards, yellow signifies instability or reactivity, and the white section is reserved for special hazards (e.g., oxidizer, water reactive). These colors, combined with numerical ratings, provide a quick visual summary of a material's dangers.

Question 19: What does packing group I indicate about a hazardous material?

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

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 20: If you are first on the scene of a HazMat accident that you did not cause, what is your responsibility?

No responsibility — drive on
Stop, keep others away, call 911, and stay upwind (Correct answer)
Attempt to clean up the spill
Direct traffic until police arrive

Correct answer: Stop, keep others away, call 911, and stay upwind

Any CDL driver witnessing a HazMat incident should stop at a safe distance, warn others, call emergency services, and stay upwind of any release.

Question 21: What must you check before loading hazardous materials?

Only the weight of the cargo
That the packages are properly labeled, marked, and in good condition (Correct answer)
The shipper's credit rating
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 22: What information must be listed first on a HazMat shipping paper entry?

The shipper's account number
The weight of the package
The proper shipping name as listed in 49 CFR (Correct answer)
The destination address

Correct answer: The proper shipping name as listed in 49 CFR

The proper shipping name, exactly as it appears in the Hazardous Materials Table in 49 CFR Part 172, must be listed first in any HazMat shipping paper entry.

Question 23: What is a 'hazardous materials manifest' or 'bill of lading' required to include?

Only the UN number
Driver's license number and cargo weight
Only the shipper's name
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 24: What must drivers do if asked by law enforcement to produce HazMat shipping papers during a roadside inspection?

Produce the shipping papers immediately upon request (Correct answer)
Refer the officer to the dispatcher
Show only the placard information
Only show papers if the officer has a warrant

Correct answer: Produce the shipping papers immediately upon request

Drivers must immediately produce HazMat shipping papers upon request from any law enforcement officer or authorized inspector.

Question 25: What is the isolation distance in the ERG used for?

Setting speed limits near chemical plants
Determining how far to park from loading docks
Establishing the initial safe perimeter around a HazMat incident (Correct answer)
Calculating route detours

Correct answer: Establishing the initial safe perimeter around a HazMat incident

The ERG isolation distance defines the minimum safe perimeter first responders should establish around a HazMat spill or release.

Question 26: Which organization in the U.S. has primary regulatory authority over the transportation of hazardous materials?

FEMA
PHMSA (Pipeline and Hazardous Materials Safety Administration) (Correct answer)
OSHA
EPA

Correct answer: PHMSA (Pipeline and Hazardous Materials Safety Administration)

PHMSA, within the U.S. Department of Transportation, has primary authority over the transportation of hazardous materials in the United States.

Question 27: What information does the ERG's orange-bordered pages provide?

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

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 28: Which type of cargo must be attended at all times when parked?

All Class 3 flammable liquids
Division 1.1, 1.2, and 1.3 explosives (Correct answer)
Refrigerated perishables
Any cargo over 10,000 lbs

Correct answer: Division 1.1, 1.2, and 1.3 explosives

Vehicles transporting Division 1.1, 1.2, and 1.3 explosives must be attended at all times — the driver must remain within 100 feet and in view of the vehicle.

Question 29: What is the purpose of HazMat segregation rules?

To simplify customs declarations
To make loading faster and more efficient
To reduce vehicle weight
To prevent incompatible materials from reacting with each other during transport (Correct answer)

Correct answer: To prevent incompatible materials from reacting with each other during transport

Segregation rules keep incompatible hazardous materials separated so they cannot react with each other and cause fire, explosion, or toxic releases.

Question 30: When is it acceptable to transfer HazMat from one vehicle to another on a public road?

Whenever the driver deems it necessary
Whenever it is more convenient
Only in an emergency when directed by emergency personnel (Correct answer)
Only during daylight hours

Correct answer: Only in an emergency when directed by emergency personnel

Transferring hazardous materials between vehicles on a public road is only permitted in emergencies and must be supervised by proper authorities.

Question 31: Prior to 2002, the bar was yellow; it is now orange to indicate

Physical Hazard (Correct answer)
Special Hazard Information
Health Hazard
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." <br> <br> 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.

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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These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

dmv.ny.gov — Fees, renewal, retake policy, score validity · verified Nov 2026
michigan.gov — Exam format, test delivery · verified Nov 2026
pa.gov — Exam format, fees, test delivery · verified Oct 2026
fmcsa.dot.gov — Passing score, eligibility · verified Oct 2026
ilsos.gov — Renewal · verified Oct 2026
dps.texas.gov — Eligibility, score validity · verified Oct 2026