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CDL Hazardous Materials Endorsement (HME) practice questions

200 free questions with answers and explanations.

Practice test
  1. 51.A driver is transporting Division 2.3 Poisonous Gas (e.g., Anhydrous Ammonia, UN1005). There is an accident involving a breach of the container, and the gas is visibly escaping. What is the MINIMUM initial evacuation distance, in all directions, as recommended by the ERG for a large spill/leak of this material during daytime conditions?Emergencies and Accidents
  2. 52.A driver is transporting a shipment of hazardous materials that includes 900 pounds of Division 2.1 (Flammable Gas) and 150 pounds of Class 3 (Flammable Liquid). None of these materials are Table 1 materials. What placarding requirement applies to this vehicle?Hazardous Materials Regulations
  3. 53.A driver is transporting a bulk quantity of a material classified as a 'Dangerous When Wet' substance (Division 4.3). Which of the following is a critical driver responsibility related to this material?Hazardous Materials Regulations
  4. 54.A hazmat incident occurs involving a substance with a square background placard containing a flame symbol and the number '3' at the bottom. This indicates a Class 3 Flammable Liquid. If this substance is spilled and ignited, what is the MOST effective extinguishing agent for a large-scale fire involving this material, as generally recommended by the ERG?Emergencies and Accidents
  5. 55.A driver is involved in an accident where a container of Class 2.1 Flammable Gas (e.g., Propane) is ruptured, and the gas is escaping, but NOT on fire. The driver has safely evacuated and called 911. What is the MOST critical immediate action for emergency responders to prioritize upon arrival, according to general HazMat response principles?Emergencies and Accidents
  6. 56.A driver is preparing to transport a shipment of hazardous waste. Which additional document, besides the standard shipping paper, is REQUIRED for this specific type of hazardous material?Hazardous Materials Regulations
  7. 57.A driver is transporting a shipment of Class 7 (Radioactive) materials that are designated as a Highway Route Controlled Quantity (HRCQ). Which of the following is a mandatory requirement for the driver of such a shipment?Hazardous Materials Regulations
  8. 58.A driver is examining a shipping paper for a hazardous material. Which of the following pieces of information is NOT typically required to be present on a hazardous materials shipping paper?Hazardous Materials Regulations
  9. 59.When transporting hazardous materials, which document must be readily accessible to the driver and emergency responders, typically kept within arm's reach while driving and on the driver's seat when outside the vehicle?Emergencies and Accidents
  10. 60.A commercial driver is transporting a shipment that includes 1,000 pounds of non-flammable oxygen (Division 2.2) and 500 pounds of corrosive liquid (Class 8). The driver must ensure the vehicle is placarded with which of the following?Hazardous Materials Regulations
  11. 61.A driver is transporting hazardous materials and needs to identify the hazard class of a substance. Where is the most accurate and primary location to find the hazard class listed on a shipping paper?Hazardous Materials Regulations
  12. 62.A driver is transporting a shipment that includes UN1993, Flammable liquids, N.O.S., Class 3, PG II, and UN1814, Potassium hydroxide solution, Class 8, PG II. Which of the following segregation requirements applies?Hazardous Materials Regulations
  13. 63.A driver is transporting a bulk quantity of UN1950, Aerosols, Class 2.1 (Flammable Gas). The product is packaged in non-reusable containers designed to be expelled by a propellant. What is the maximum distance the driver may park the vehicle from the traveled portion of the roadway during an en route stop, if not at a designated parking area?Hazardous Materials Regulations
  14. 64.A driver is transporting a bulk quantity of a corrosive liquid (UN1824, Class 8, PG II). Which of the following is an essential entry on the shipping paper for this hazardous material?Hazardous Materials Regulations
  15. 65.A driver is transporting a shipment of UN1090, Acetone, Class 3, PG II, in non-bulk packages. The total weight of hazardous materials on the vehicle is 800 pounds. Which of the following is required to be displayed on the shipping papers for this material?Communication Rules
  16. 66.A driver is transporting a shipment of Class 3 Flammable Liquid. According to federal regulations, where must the emergency response information (ERI) be kept during transit?Communication Rules
  17. 67.A driver is transporting a bulk quantity of UN1005, Anhydrous Ammonia, Class 2.2, with a subsidiary hazard of Class 2.3 (Poison Inhalation Hazard). The material is in a cargo tank. In addition to the Class 2.2 placard and the identification number, what specific marking is required on the cargo tank for this material?Communication Rules
  18. 68.A driver is preparing to transport 2,500 pounds of UN1203, Gasoline, Packing Group II, Class 3. The shipment consists of non-bulk packages. What is the minimum aggregate gross weight threshold that requires the vehicle to be placarded for this material?Communication Rules
  19. 69.A driver is transporting a shipment of UN1072, Oxygen, compressed, Class 2.2, in a cargo tank. The cargo tank has a capacity of 3,000 gallons. Which of the following statements about the placarding of this vehicle is correct?Communication Rules
  20. 70.A driver is transporting hazardous waste. In addition to the standard shipping paper requirements, what specific document is mandated by the EPA to accompany this shipment?Communication Rules
  21. 71.A driver is transporting a shipment of UN1760, Corrosive liquid, N.O.S., Class 8, PG II, in an IBC (Intermediate Bulk Container). The IBC has a maximum capacity of 500 gallons. Which marking is specifically required on the IBC in addition to the proper shipping name and identification number?Communication Rules
  22. 72.A driver is transporting a portable tank containing UN1978, Propane, Class 2.1. The tank has the appropriate placards and identification numbers. What additional information must be available to emergency responders in case of an incident?Communication Rules
  23. 73.A driver is transporting a shipment of UN2920, Corrosive liquid, flammable, N.O.S., Class 8, (subsidiary hazard Class 3), PG II. The material is in non-bulk packages. Which of the following statements about labeling these packages is correct?Communication Rules
  24. 74.A driver is transporting a non-bulk shipment of UN1075, Liquefied Petroleum Gas, in cylinders. The total gross weight of the LP-Gas is 800 pounds. What type of placard is required for this shipment?Communication Rules
  25. 75.A driver is transporting four large cylinders, each containing 250 pounds of UN1072, Oxygen, compressed, Class 2.2. The total gross weight of the cylinders and contents is 1,200 pounds. What type of placard is required on the vehicle?Communication Rules
  26. 76.A driver is transporting a shipment of UN1824, Sodium hydroxide solution, Class 8, PG II, in several non-bulk drums. The shipping papers are prepared by the shipper. What is the driver's primary responsibility regarding the accuracy of these shipping papers before starting the trip?Communication Rules
  27. 77.A driver is transporting a non-bulk shipment of UN1075, Liquefied Petroleum Gas, in cylinders. The total gross weight of the cylinders, including the gas, is 950 pounds. Which of the following placards is required on the vehicle?Communication Rules
  28. 78.A driver is instructed to transport hazardous waste. In addition to the standard shipping paper requirements, what specific additional documentation must accompany this shipment?Communication Rules
  29. 79.A driver is delivering a shipment of UN2794, Batteries, wet, filled with acid, Class 8, Packing Group III. The shipping paper has all the correct information, but the emergency response information (ERI) is provided as a separate document. What is a specific requirement for this separate ERI document?Communication Rules
  30. 80.A driver is transporting 500 pounds of UN1830, Sulfuric acid, with more than 51% acid, Packing Group II, Class 8. The driver also has 600 pounds of UN1993, Flammable liquids, N.O.S., Packing Group II, Class 3. Both are in non-bulk packages. What placards are required on the vehicle?Communication Rules
  31. 81.A shipping paper for a hazardous material must include the proper shipping name, hazard class, identification number, and packing group. Which of these items must be entered first on the shipping paper, preceding all other hazard information?Communication Rules
  32. 82.A driver is transporting a shipment of UN1993, Flammable liquids, N.O.S., Class 3, PG III. The shipping papers are kept in a pouch on the driver's door. During a roadside inspection, the officer asks for the shipping papers. What is the driver's responsibility regarding the accessibility of these papers?Communication Rules
  33. 83.A driver is delivering a shipment of UN1203, Gasoline, Class 3, PG II, in 55-gallon drums. The shipping papers are kept in a pouch on the driver's door. During a roadside inspection, the inspector asks for the shipping papers. What is the maximum distance the driver should have to travel to retrieve the shipping papers from their location?Communication Rules
  34. 84.A driver is transporting a bulk quantity of a hazardous material that requires placarding. Which of the following is the primary responsibility of the driver regarding the placement of these placards?Communication Rules
  35. 85.A driver is transporting a mixed load of hazardous materials, including 600 pounds of UN1203 (Gasoline, Class 3, PG II) and 500 pounds of UN1830 (Sulfuric acid, with more than 51% acid, Class 8, PG II). Both are in non-bulk packaging. Which of the following placards are required on the vehicle?Communication Rules
  36. 86.A driver is transporting a shipment of UN1005, Anhydrous Ammonia, Class 2.2, with a subsidiary hazard of Class 8. The shipping papers correctly list both the primary and subsidiary hazards. What specific information, beyond the basic description, must be included on the shipping papers for this material?Communication Rules
  37. 87.A driver is involved in a minor accident while transporting UN1203, Gasoline, Class 3, PG II. The shipping papers are in a pouch on the driver's door. The driver is uninjured and able to exit the vehicle. What is the driver's responsibility concerning the shipping papers at this point?Communication Rules
  38. 88.A driver is transporting a cylinder containing UN1070, Nitrous Oxide, Class 2.2, in a non-bulk quantity. The cylinder has a label for Class 2.2. What other specific marking, if any, is required on the cylinder itself?Communication Rules
  39. 89.A driver is transporting a bulk quantity of UN1203, Gasoline, Class 3, PG II, in a cargo tank. The cargo tank is equipped with an identification number holder. Which of the following statements regarding the display of the identification number is correct?Communication Rules
  40. 90.A driver is transporting a mixed load of hazardous materials. The vehicle contains 300 pounds of UN1203, Gasoline, Class 3, PG II, and 200 pounds of UN1830, Sulfuric acid, Class 8, PG II. The vehicle also contains 600 pounds of UN1075, Liquefied Petroleum Gas, Class 2.1, in non-bulk cylinders. What placarding is required for this vehicle?Communication Rules
  41. 91.A driver is transporting a package containing UN1263, Paint, Class 3, PG II. The package has a hazard label affixed. Where must this label be placed on the package?Communication Rules
  42. 92.A driver is transporting 600 pounds of UN1789, Hydrochloric acid, Class 8, PG II, in 30 non-bulk packages, each weighing 20 pounds. The vehicle also contains 400 pounds of UN1830, Sulfuric acid, Class 8, PG II, in 20 non-bulk packages, each weighing 20 pounds. What is the minimum number of Class 8 placards required on the vehicle?Communication Rules
  43. 93.A driver is transporting 1,500 pounds of UN1824, Sodium hydroxide solution, Class 8, PG II, in 20 non-bulk packages. The driver notices that the shipping papers list the material as 'Sodium Hydroxide, liquid' instead of 'Sodium hydroxide solution'. What action should the driver take?Communication Rules
  44. 94.A driver is transporting a portable tank containing UN1993, Flammable liquids, N.O.S., Class 3, PG III. The tank has a capacity of 1,500 gallons. In addition to the identification number, what other marking is specifically required on the portable tank itself, near the identification number, when transporting this material?Communication Rules
  45. 95.A driver is preparing to transport 400 pounds of UN2015, Hydrogen peroxide, aqueous solutions (with not less than 20% but not more than 60% hydrogen peroxide), Class 5.1, PG II. The material is packaged in non-bulk containers. Which of the following statements about placarding is correct?Communication Rules
  46. 96.A driver is transporting a shipment of UN1005, Anhydrous Ammonia, Class 2.2, with a subsidiary hazard of 6.1 (Poison Inhalation Hazard - PIH), in a bulk packaging. Which of the following markings is specifically required on the bulk packaging to indicate the PIH hazard?Communication Rules
  47. 97.A driver is transporting a bulk quantity of UN1203, Gasoline, Class 3, PG II, in a cargo tank motor vehicle. Where must the identification number '1203' be displayed on the vehicle?Communication Rules
  48. 98.A driver is transporting a shipment of UN1072, Oxygen, compressed, Class 2.2, in a cargo tank motor vehicle. The vehicle is placarded with a 'NON-FLAMMABLE GAS' placard. What additional specific placard is required if the total weight of oxygen in the cargo tank exceeds 1,001 pounds?Communication Rules
  49. 99.A driver is delivering a shipment of UN1203, Gasoline, Class 3, PG II, in 55-gallon drums. Upon arrival at the consignee's location, the driver discovers that the consignee is closed for the day and there is no secure place to leave the shipment. What is the driver's primary responsibility regarding the shipping papers in this situation?Communication Rules
  50. 100.A driver is transporting a portable tank containing UN1993, Flammable liquids, N.O.S., Class 3, PG III. The tank is being used for a material that is not specifically listed in the Hazardous Materials Table. What specific marking is required on the portable tank in addition to the identification number and appropriate placards?Communication Rules