DOT HAZMAT 49CFR EXAM
QUESTIONS AND CORRECT
ANSWERS, WITH COMPLETE
SOLUTION. UPDATED 2025/2026.
Course
DOT HAZMAT
1. According to 49 CFR, what is the primary purpose of Hazardous Materials Regulations
(HMR)?
A. To increase shipping speed
B. To promote international trade only
C. To ensure the safe transportation of hazardous materials in commerce
D. To reduce transportation costs
Answer: C. To ensure the safe transportation of hazardous materials in commerce
Solution:
The Hazardous Materials Regulations (49 CFR Parts 171–180) are designed to protect people,
property, and the environment from risks associated with transporting hazardous materials.
2. How often must a hazmat employee receive recurrent training under 49 CFR?
A. Every 2 years
B. Every 3 years
C. Every 5 years
D. Every 10 years
Answer: B. Every 3 years
Solution:
Under 49 CFR §172.704, hazmat employees must complete recurrent training at least once every
three years.
3. What is the minimum information required on a hazardous materials shipping paper?
A. Proper Shipping Name only
B. Hazard Class only
,C. Identification Number, Proper Shipping Name, Hazard Class, and Packing Group (if assigned)
D. Consignee address only
Answer: C. Identification Number, Proper Shipping Name, Hazard Class, and Packing Group (if
assigned)
Solution:
Basic description sequence:
1. UN/NA Identification Number
2. Proper Shipping Name
3. Hazard Class/Division
4. Packing Group (if applicable)
Example:
UN1203, Gasoline, 3, PG II
4. Which hazard class includes flammable liquids such as gasoline?
A. Class 1
B. Class 2
C. Class 3
D. Class 8
Answer: C. Class 3
Solution:
Class 3 materials are flammable liquids with flash points meeting regulatory criteria. Gasoline is
classified as:
UN1203, Gasoline, Class 3, Packing Group II.
5. What does the UN number "UN1203" identify?
A. Diesel Fuel
B. Gasoline
C. Acetone
D. Propane
Answer: B. Gasoline
Solution:
,UN1203 is the internationally recognized identification number for gasoline used on shipping
papers, packages, and placards.
6. Which placard is required for a bulk shipment of a Class 3 flammable liquid?
A. Corrosive Placard
B. Poison Placard
C. Flammable Placard
D. Radioactive Placard
Answer: C. Flammable Placard
Solution:
Bulk shipments of Class 3 materials generally require the red FLAMMABLE placard displaying
the flame symbol and class number "3."
7. A package containing hazardous materials is leaking during transportation. What should
the carrier do first?
A. Continue transportation
B. Ignore the leak if it is minor
C. Secure the area and follow emergency response procedures
D. Repackage the material without authorization
Answer: C. Secure the area and follow emergency response procedures
Solution:
Safety is the priority. The carrier must isolate hazards, protect personnel, and follow emergency
response information provided under the HMR.
8. What is the purpose of a Safety Data Sheet (SDS)?
A. To provide billing information
B. To provide hazard, handling, storage, and emergency response information
C. To replace shipping papers
D. To determine transportation costs
Answer: B. To provide hazard, handling, storage, and emergency response information
Solution:
, An SDS provides detailed information about:
Physical hazards
Health hazards
Safe handling
PPE requirements
Spill response
First aid measures
9. Which agency is primarily responsible for enforcing hazardous materials transportation
regulations in the United States?
A. OSHA
B. EPA
C. PHMSA
D. FDA
Answer: C. PHMSA
Solution:
The Pipeline and Hazardous Materials Safety Administration administers and enforces the
Hazardous Materials Regulations under the U.S. Department of Transportation.
10. What is the required sequence for the basic description on a shipping paper?
A. Hazard Class, Proper Shipping Name, UN Number, Packing Group
B. Packing Group, Hazard Class, Proper Shipping Name, UN Number
C. UN/NA Number, Proper Shipping Name, Hazard Class, Packing Group
D. Proper Shipping Name, UN Number, Packing Group, Hazard Class
Answer: C. UN/NA Number, Proper Shipping Name, Hazard Class, Packing Group
Solution:
The required sequence under 49 CFR §172.202 is:
UN1203, Gasoline, 3, PG II
Where:
UN1203 = Identification Number
QUESTIONS AND CORRECT
ANSWERS, WITH COMPLETE
SOLUTION. UPDATED 2025/2026.
Course
DOT HAZMAT
1. According to 49 CFR, what is the primary purpose of Hazardous Materials Regulations
(HMR)?
A. To increase shipping speed
B. To promote international trade only
C. To ensure the safe transportation of hazardous materials in commerce
D. To reduce transportation costs
Answer: C. To ensure the safe transportation of hazardous materials in commerce
Solution:
The Hazardous Materials Regulations (49 CFR Parts 171–180) are designed to protect people,
property, and the environment from risks associated with transporting hazardous materials.
2. How often must a hazmat employee receive recurrent training under 49 CFR?
A. Every 2 years
B. Every 3 years
C. Every 5 years
D. Every 10 years
Answer: B. Every 3 years
Solution:
Under 49 CFR §172.704, hazmat employees must complete recurrent training at least once every
three years.
3. What is the minimum information required on a hazardous materials shipping paper?
A. Proper Shipping Name only
B. Hazard Class only
,C. Identification Number, Proper Shipping Name, Hazard Class, and Packing Group (if assigned)
D. Consignee address only
Answer: C. Identification Number, Proper Shipping Name, Hazard Class, and Packing Group (if
assigned)
Solution:
Basic description sequence:
1. UN/NA Identification Number
2. Proper Shipping Name
3. Hazard Class/Division
4. Packing Group (if applicable)
Example:
UN1203, Gasoline, 3, PG II
4. Which hazard class includes flammable liquids such as gasoline?
A. Class 1
B. Class 2
C. Class 3
D. Class 8
Answer: C. Class 3
Solution:
Class 3 materials are flammable liquids with flash points meeting regulatory criteria. Gasoline is
classified as:
UN1203, Gasoline, Class 3, Packing Group II.
5. What does the UN number "UN1203" identify?
A. Diesel Fuel
B. Gasoline
C. Acetone
D. Propane
Answer: B. Gasoline
Solution:
,UN1203 is the internationally recognized identification number for gasoline used on shipping
papers, packages, and placards.
6. Which placard is required for a bulk shipment of a Class 3 flammable liquid?
A. Corrosive Placard
B. Poison Placard
C. Flammable Placard
D. Radioactive Placard
Answer: C. Flammable Placard
Solution:
Bulk shipments of Class 3 materials generally require the red FLAMMABLE placard displaying
the flame symbol and class number "3."
7. A package containing hazardous materials is leaking during transportation. What should
the carrier do first?
A. Continue transportation
B. Ignore the leak if it is minor
C. Secure the area and follow emergency response procedures
D. Repackage the material without authorization
Answer: C. Secure the area and follow emergency response procedures
Solution:
Safety is the priority. The carrier must isolate hazards, protect personnel, and follow emergency
response information provided under the HMR.
8. What is the purpose of a Safety Data Sheet (SDS)?
A. To provide billing information
B. To provide hazard, handling, storage, and emergency response information
C. To replace shipping papers
D. To determine transportation costs
Answer: B. To provide hazard, handling, storage, and emergency response information
Solution:
, An SDS provides detailed information about:
Physical hazards
Health hazards
Safe handling
PPE requirements
Spill response
First aid measures
9. Which agency is primarily responsible for enforcing hazardous materials transportation
regulations in the United States?
A. OSHA
B. EPA
C. PHMSA
D. FDA
Answer: C. PHMSA
Solution:
The Pipeline and Hazardous Materials Safety Administration administers and enforces the
Hazardous Materials Regulations under the U.S. Department of Transportation.
10. What is the required sequence for the basic description on a shipping paper?
A. Hazard Class, Proper Shipping Name, UN Number, Packing Group
B. Packing Group, Hazard Class, Proper Shipping Name, UN Number
C. UN/NA Number, Proper Shipping Name, Hazard Class, Packing Group
D. Proper Shipping Name, UN Number, Packing Group, Hazard Class
Answer: C. UN/NA Number, Proper Shipping Name, Hazard Class, Packing Group
Solution:
The required sequence under 49 CFR §172.202 is:
UN1203, Gasoline, 3, PG II
Where:
UN1203 = Identification Number
