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Texas CDL HazMat Endorsement Practice Exam Questions And Correct Answers, Exams of Transportation Engineering

Lamar State College - OrangeTransportation Engineering

This document contains practice exam questions with verified answers and detailed rationales for the Texas CDL Hazardous Materials (HazMat) Endorsement. It covers hazard classes, placard identification, UN numbers, shipping paper requirements, ERG usage, TSA background checks, and compliance with federal regulations under 49 CFR. The material aligns with Texas CDL testing standards and federal DOT HazMat regulations, including radioactive transport, explosive handling, corrosives, toxic inhalation hazards, route restrictions, and emergency response procedures. It serves as comprehensive preparation for obtaining or renewing a Texas HazMat endorsement.

Typology: Exams

2025/2026

Available from 02/21/2026

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Texas CDL HazMat Endorsement
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales Q&A | Instant Download Pdf
1. What is the purpose of placards on a hazardous materials vehicle?
a) To display the company logo
b) To indicate vehicle ownership
c) To identify the type of hazardous material
d) To meet insurance requirements
Placards inform emergency responders and the public about the
nature of hazardous materials being transported.
2. Which regulation governs the transportation of hazardous materials in
the United States?
a) OSHA 1910
b) 49 CFR
c) NFPA 70E
d) EPA Title 40
The DOT’s 49 CFR (Code of Federal Regulations) contains the rules for
transporting hazardous materials.
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Download Texas CDL HazMat Endorsement Practice Exam Questions And Correct Answers and more Exams Transportation Engineering in PDF only on Docsity!

Texas CDL HazMat Endorsement

Practice Exam Questions And Correct

Answers (Verified Answers) Plus

Rationales Q&A | Instant Download Pdf

  1. What is the purpose of placards on a hazardous materials vehicle? a) To display the company logo b) To indicate vehicle ownership c) To identify the type of hazardous material d) To meet insurance requirements Placards inform emergency responders and the public about the nature of hazardous materials being transported.
  2. Which regulation governs the transportation of hazardous materials in the United States? a) OSHA 1910 b) 49 CFR c) NFPA 70E d) EPA Title 40 The DOT’s 49 CFR (Code of Federal Regulations) contains the rules for transporting hazardous materials.
  1. What is the minimum age to obtain a Texas CDL with a HazMat endorsement for interstate transport? a) 18 b) 21 c) 20 d) 19 Federal law requires HazMat drivers to be at least 21 years old for interstate transport.
  2. Which hazard class covers flammable liquids? a) Class 2 b) Class 3 c) Class 5 d) Class 8 Class 3 covers flammable and combustible liquids like gasoline and acetone.
  3. Which document must be in the driver’s possession when transporting hazardous materials? a) OSHA log b) Incident report form c) Safety Data Sheet (SDS) d) Shipping papers Shipping papers describe the hazardous materials and are required to be carried within reach while driving.
  4. How often must HazMat endorsement holders renew their TSA background check? a) Every 5 years b) Every 5 years or with CDL renewal c) Every 2 years d) Annually

Green placards indicate non-flammable, non-toxic gases such as nitrogen.

  1. What is the hazard class for corrosives? a) Class 2 b) Class 5 c) Class 8 d) Class 9 Class 8 includes substances that cause destruction of living tissue or severe corrosion of metals.
  2. What must be done if a hazardous material spill occurs on the road? a) Keep driving to next stop b) Park in a safe location and notify authorities c) Wash the spill with water d) Attempt to clean without PPE Stopping, securing the area, and notifying authorities is the safe and legal response.
  3. Which hazard class covers poisonous (toxic) substances? a) Class 3 b) Class 6 c) Class 7 d) Class 9 Class 6 covers toxic substances and infectious materials.
  4. A HazMat endorsement applicant must pass: a) Road test only b) Knowledge test and TSA background check c) Vision test only d) Physical exam only

The Process Includes Passing The Written Knowledge Test And The TSA Security Threat Assessment.

  1. How Far Must You Park From A Public Place When Transporting Explosives? a) 5 Feet b) 15 Feet c) 300 Feet d) 1,000 Feet DOT Regulations Require At Least 300 Feet Clearance From Occupied Buildings.
  2. Which Hazard Class Covers Flammable Solids? a) Class 4 b) Class 3 c) Class 2 d) Class 6 Class 4 Covers Solids That Ignite Through Friction, Moisture, Or Spontaneous Combustion.
  3. Which Hazard Class Covers Oxidizers? a) Class 3 b) Class 8 c) Class 5 d) Class 2 Class 5 Includes Oxidizers And Organic Peroxides That May Intensify Fires.
  4. What Does The Number 1203 On A Placard Indicate? a) Diesel Fuel b) Gasoline c) Ammonia

Cryogenic Liquids Are Gases Cooled To Extremely Low Temperatures, Covered Under Class 2.

  1. How Should Hazardous Materials Be Secured In A Vehicle? a) Loosely To Allow Shifting b) With Rope Only c) Mixed With Other Freight d) Braced To Prevent Movement Materials Must Be Secured To Prevent Shifting Or Falling During Transport.
  2. Which Hazard Class Covers Infectious Substances? a) Class 3 b) Class 6 c) Class 8 d) Class 9 Class 6 Includes Infectious Substances That Can Cause Disease In Humans Or Animals.
  3. What Does A Yellow Placard With A Flame Symbol Indicate? a) Flammable Solid b) Non-Flammable Gas c) Oxidizer d) Corrosive Yellow With A Flame Symbol Represents Oxidizing Materials In Class 5.
  4. What Should You Do Before Unloading Hazardous Materials? a) Begin Unloading Immediately b) Ignore Safety Protocols c) Set The Parking Brake And Chock The Wheels d) Check Your Phone

Securing The Vehicle Prevents Accidental Movement During Unloading.

  1. Which Hazard Class Covers Flammable Gases? a) Class 4 b) Class 2 c) Class 3 d) Class 5 Flammable Gases Such As Propane Fall Under Class 2.
  2. How Must Shipping Papers Be Stored While Driving? a) In The Glove Compartment b) Within Reach Of The Driver And Visible When Seat Belt Is Removed c) In The Back Of The Truck d) With The Dispatcher They Must Be Readily Accessible To Emergency Responders In Case Of Accident.
  3. Which Hazard Class Covers Explosives With Mass Explosion Hazard? a) 1. b) 1. c) 1. d) 1. Division 1.1 Explosives Present A Mass Explosion Hazard Affecting The Entire Load.
  4. What Does A White Placard With A Skull And Crossbones Indicate? a) Poison b) Radioactive c) Corrosive d) Non-Flammable Gas

Segregation Prevents Dangerous Chemical Reactions Between Incompatible Loads.

  1. Which Hazard Class Covers Spontaneously Combustible Materials? a) Class 3 b) Class 6 c) Class 4 d) Class 8 Certain Class 4 Materials Ignite Spontaneously When Exposed To Air.
  2. What Is The Hazard Class For Dry Ice? a) Class 4 b) Class 3 c) Class 9 d) Class 6 Dry Ice Is Regulated As A Class 9 Miscellaneous Hazardous Material Due To CO₂ Release.
  3. How Should Placards Be Placed On A Vehicle? a) Only On One Side b) On All Four Sides c) On The Roof d) On The Back Only DOT Rules Require Placards On All Four Sides For Visibility.
  4. Which Hazard Class Covers Explosives With No Significant Blast Hazard? a) 1. b) 1. c) 1. d) 1.

Division 1.4 Explosives Are Low-Hazard And Unlikely To Cause Mass Explosion.

  1. What Does The ERG Orange Section Contain? a) Evacuation Distances b) Response Guides For Different Materials c) Hazard Class List d) Shipping Paper Format The Orange Section Contains Numbered Guides For Responding To Hazmat Incidents.
  2. Which Hazard Class Covers Inhalation Hazard Gases? a) Class 4 b) Class 2 c) Class 5 d) Class 9 Toxic-By-Inhalation Gases Fall Under Class 2 Compressed Gases.
  3. What Does A Placard With The Number 1993 Indicate? a) Propane b) Chlorine c) Diesel Fuel Or Fuel Oil d) Hydrogen UN 1993 Covers Flammable Liquids Including Diesel Fuel And Fuel Oil.
  4. What Is The Minimum Number Of Fire Extinguishers Required For Hazmat Transport? a) None b) One With At Least 10 B:C Rating c) Two 1-A Rated d) One 5-A Rated DOT Rules Require A Minimum 10 B:C Rated Extinguisher For Most Hazmat Transport.

d) Non-Flammable Gas Black And White Stripes Are Used For Class 9 Miscellaneous Materials.

  1. What Is The Hazard Class For Anhydrous Ammonia? a) Class 3 b) Class 2 c) Class 4 d) Class 8 Anhydrous Ammonia Is A Toxic Gas Under Class 2.
  2. When Must A Driver Wear Protective Equipment? a) At All Times b) When Required By The Material’s Safety Procedures c) Only At Delivery d) Only At Pickup PPE Is Worn When Handling Materials That Present A Contact Or Inhalation Hazard.
  3. What Should You Do If Placards Are Damaged In Transit? a) Remove Them b) Ignore Until Delivery c) Replace Them Immediately d) Paint Over Them Placards Must Be Legible And Visible; Replace Damaged Ones Promptly.
  4. Which Hazard Class Covers Infectious Waste? a) Class 4 b) Class 6 c) Class 2 d) Class 9 Class 6 Includes Medical And Biological Waste That Can Transmit Disease.
  1. What Does “TIH” Stand For In Hazmat Regulations? a) Toxic In Handling b) Toxic Inhalation Hazard c) Temperature Induced Hazard d) Transport Inspection Handling TIH Is A DOT Term For Materials Toxic When Inhaled.
  2. Which Hazard Class Covers Dangerous Goods That Are Magnetized? a) Class 3 b) Class 6 c) Class 9 d) Class 8 Strongly Magnetized Materials Fall Under Class 9 Miscellaneous.
  3. What Is The Hazard Class For Chlorine? a) Class 3 b) Class 4 c) Class 2 d) Class 6 Chlorine Is A Toxic Compressed Gas In Class 2.
  4. What Must Be Done Before Opening Cargo Doors With Hazardous Materials Inside? a) Stand Close And Pull Quickly b) Ignore Ventilation c) Check For Vapors Or Pressure Build-Up d) Shake The Door Ventilation Prevents Sudden Release Of Dangerous Fumes.
  5. What Does A Placard With The Number 1075 Indicate? a) Gasoline b) Diesel
  1. What Is The Purpose Of A Transport Index On Radioactive Labels? a) Identify Shipping Paper b) Indicate Radiation Level At 1 Meter c) Show Weight Of Cargo d) Display Emergency Code The Transport Index Measures Radiation Exposure Risk For Handling.
  2. Which Hazard Class Covers Hazardous Waste? a) Class 3 b) Class 9 c) Class 6 d) Class 2 Hazardous Waste Not Fitting Other Categories Falls Under Class 9.
  3. What Is The Hazard Class For Sulfur? a) Class 4 b) Class 3 c) Class 6 d) Class 9 Sulfur Is A Flammable Solid Under Class 4.
  4. What Does A Green Placard With A Gas Cylinder Symbol Indicate? a) Flammable Gas b) Non-Flammable Gas c) Oxidizer d) Poison Gas Green Placards Are Used For Class 2 Non-Flammable Gases.
  5. What Is The Hazard Class For Battery Acid? a) Class 3 b) Class 4 c) Class 8

d) Class 9 Battery Acid Is A Corrosive Substance Under Class 8.

  1. Which Hazard Class Covers Radioactive Yellow-II Label Packages? a) Class 4 b) Class 7 c) Class 3 d) Class 8 Radioactive Materials With Medium Radiation Levels Use The Class 7 Yellow-II Label.
  2. What Does A Placard With The Number 1202 Indicate? a) Diesel Fuel b) Propane c) Gasoline d) Kerosene UN 1202 Designates Diesel Fuel And Gas Oil.
  3. Which Hazard Class Covers Compressed Oxygen? a) Class 3 b) Class 4 c) Class 2 d) Class 8 Oxygen Is A Non-Flammable Oxidizing Gas In Class 2.
  4. What Is The Purpose Of The Emergency Response Guidebook’s Green Section? a) Hazard Class Charts b) Placard Identification c) Protective Action Distances d) Shipping Paper Formats
  1. Which Hazard Class Covers Flammable Aerosols? a) Class 4 b) Class 3 c) Class 2 d) Class 6 Flammable Aerosols Are Gases Under Class 2.
  2. What Does The Number 1017 On A Placard Indicate? a) Ammonia Solution b) Chlorine c) LPG d) Acetylene UN 1017 Is For Chlorine Gas, A Toxic Inhalation Hazard.
  3. What Is Required When Carrying Any Amount Of Class A Explosives? a) No Placard If Small Quantity b) Local Fire Permit Only c) Placards On All Four Sides d) Placard On Back Only Class A Explosives Always Require Placards For Visibility.
  4. What Is The Hazard Class For Acetone? a) Class 2 b) Class 3 c) Class 4 d) Class 5 Acetone Is A Flammable Liquid In Class 3.
  5. What Is The Hazard Class For Sodium Hydroxide Solution? a) Class 4 b) Class 3 c) Class 8

d) Class 9 Sodium Hydroxide Solution Is Corrosive, Class 8.

  1. Which Hazard Class Covers Substances Liable To Emit Flammable Gas When Wet? a) Class 4 b) Class 2 c) Class 3 d) Class 6 Certain Class 4 Solids React With Water To Release Flammable Gases.
  2. What Must Be Displayed On The Sides Of A Bulk Hazmat Package? a) DOT Inspection Sticker b) Identification Number c) Carrier Logo d) Driver’s License Bulk Packages Require Visible UN/NA Identification Numbers On Both Sides.
  3. What Does A Red And White Quartered Placard Indicate? a) Non-Flammable Gas b) Radioactive c) Explosives (Division 1.4) d) Spontaneously Combustible Red And White Quartered Placards Identify Certain Explosive Hazards.
  4. Which Hazard Class Covers Pesticides? a) Class 3 b) Class 6 c) Class 8 d) Class 9 Pesticides Toxic To Humans Are Class 6 Poisons.