PermitPracticeTest
Menu

CDL hazardous materials practice test 3

25 more questions on hazardous materials, written from the Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0).

25 questions

  1. Question 1Shippers communicate the risk of hazardous materials by providing which of these?

    Show answer

    B: Warning labels, shipping papers, emergency response information and placards. To communicate the risk, shippers put hazard warning labels on packages and provide proper shipping papers, emergency response information and placards. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.1.2 Communicate the Risk, page 9-2.

  2. Question 2Packages containing liquid containers carry arrows. What do the arrows show?

    Show answer

    D: The upright direction for the package. Packages with liquid containers inside have package orientation markings with arrows pointing in the correct upright direction. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.7 Package Markings and Labels, page 9-8.

  3. Question 3What must you do before loading or unloading any explosives?

    Show answer

    B: Turn your engine off. Shut the engine off before any explosives are loaded or unloaded, and then inspect the cargo space. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 1 (Explosives), page 9-11.

  4. Question 4At a rest area you find your hazardous cargo slowly leaking, and there is no phone. What should you do?

    Show answer

    B: Park, secure the area, stay there, and send someone for help with written information. Never keep driving with hazmat leaking to find a phone or help. Park, secure the area, stay there and call or send someone for help, giving them the details in writing. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.3 Fires, page 9-16.

  5. Question 5Besides being close enough, what else must the person attending a placarded vehicle be able to do?

    Show answer

    A: Know what to do in emergencies and be able to move the vehicle if needed. The attendant must know the hazards of the materials, know what to do in emergencies and be able to move the vehicle if needed. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.6.3 Attending Parked Vehicles, page 9-14.

  6. Question 6When a law enforcement officer stops a hazmat vehicle, which of these might the officer check?

    Show answer

    C: Shipping papers, placards, the hazmat endorsement and the driver's hazmat knowledge. Officers may check your shipping papers, vehicle placards, the hazmat endorsement on your license and your knowledge of hazardous materials. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.1.3 Assure Safe Drivers and Equipment, page 9-2.

  7. Question 7A package needs more than one hazard label. Where must the labels be placed?

    Show answer

    A: Close together, near the proper shipping name. When a package carries two or more labels, they must be placed next to each other and near the proper shipping name. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.7 Package Markings and Labels, page 9-8.

  8. Question 8What kind of floor lining is required when hauling Division 1.1, 1.2 or 1.3 explosives?

    Show answer

    C: Non-metallic material or non-ferrous metal. Division 1.1, 1.2 and 1.3 loads need a tight floor with a liner made of non-metallic material or non-ferrous metal (metal with no iron). Stainless steel contains iron, so it does not qualify. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 1 (Explosives), page 9-11.

  9. Question 9When sending someone for help with a hazmat spill, which information should you give them?

    Show answer

    C: Your exact location and direction of travel, and the shipping name, hazard class and ID number of the materials. The helper needs the details responders will use: what happened, your exact location and direction of travel, your name, the carrier and its terminal city, and the shipping name, hazard class and ID number if known. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.3 Fires, page 9-16.

  10. Question 10Which party certifies on the shipping paper that a shipment has been prepared according to the rules?

    Show answer

    D: The shipper. The shipper packages, marks and labels the materials, prepares the shipping papers and certifies that the shipment was prepared according to the rules. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.2.1 The Shipper, page 9-2.

  11. Question 11When may you move a vehicle that is not properly placarded?

    Show answer

    B: Only in an emergency, to protect life or property. Attach the placards before you drive; you may only move an improperly placarded vehicle during an emergency to protect life or property (49 CFR 177.823). Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.10 Placarding, page 9-8.

  12. Question 12A package of explosives shows a damp or oily stain. What should you do?

    Show answer

    D: Do not take it. Refuse damaged explosives packages, including any that show dampness or an oily stain. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 1 (Explosives), page 9-11.

  13. Question 13Who pays for cleaning up contaminated parking lots, roadways and drainage ditches after a hazmat leak?

    Show answer

    D: The carrier. The carrier pays for cleanup, and the costs are enormous, so don't leave a long trail of contamination. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.3 Fires, page 9-16.

  14. Question 14Which party uses the regulations to determine a product's identification number, proper shipping name, hazard class and packing group?

    Show answer

    A: The shipper. Classifying the material is the shipper's job. The shipper works out its ID number, proper shipping name, hazard class and packing group, plus the packaging, labels, markings and placards it needs. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.2.1 The Shipper, page 9-2.

  15. Question 15How far must a placard be from any other marking on the vehicle?

    Show answer

    B: At least 3 inches. Each placard must be at least three inches away from any other markings (49 CFR 172.516(c)(4)). Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.10 Placarding, page 9-9.

  16. Question 16You may NOT transport Division 1.1 or 1.2 explosives in a vehicle combination that also includes what?

    Show answer

    B: A marked or placarded cargo tank. Division 1.1 or 1.2 may not be carried in a combination with a marked or placarded cargo tank, or with certain other materials such as Radioactive Yellow III packages. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 1 (Explosives), page 9-11.

  17. Question 17After a collision involving a vehicle loaded with explosives, how far away should you place the explosives before separating the vehicles?

    Show answer

    C: At least 200 feet. Remove all explosives before separating vehicles in a collision and place them at least 200 feet from the vehicles and occupied buildings. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.4 Responses to Specific Hazards: Class 1 (Explosives), page 9-16.

  18. Question 18What must the carrier do before transporting a hazardous materials shipment?

    Show answer

    B: Check that the shipper correctly described, marked and labeled it, and refuse improper shipments. Before transportation the carrier checks that the shipper correctly described, marked, labeled and prepared the shipment, and refuses improper shipments. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.2.2 The Carrier, page 9-2.

  19. Question 19Which statement about how placards must be displayed is correct?

    Show answer

    C: Words or numbers must be level and read from left to right. Each placard must be easily seen from the direction it faces, with words or numbers level and reading left to right, clear of attachments like ladders, doors and tarps; slogans such as 'Drive Safely' are prohibited. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.10 Placarding, page 9-8.

  20. Question 20Class 4 and Class 5 materials that become dangerous when wet must be handled how?

    Show answer

    C: Kept dry during transit, loading and unloading. Class 4 and 5 materials must be completely enclosed or covered securely, and those that are dangerous when wet must be kept dry in transit and during loading and unloading. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 4 and Class 5, page 9-11.

  21. Question 21Compressed gas from your vehicle was involved in an accident. Whom must you notify?

    Show answer

    A: The shipper. Any accident involving compressed gas must be reported to the shipper. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.4 Responses to Specific Hazards: Class 2 (Compressed Gases), page 9-16.

  22. Question 22A package in a hazmat shipment is leaking when you arrive to load. What should you do as the driver?

    Show answer

    C: Refuse the leaking package. The driver's duties include refusing leaking packages and shipments; it is also illegal to move a vehicle with leaking hazardous materials. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.2.3 The Driver, page 9-2.

  23. Question 23Where may the front placard on a tractor-semitrailer be placed?

    Show answer

    D: On the front of the tractor or the front of the trailer. The front placard can go on the front of the tractor or on the front of the trailer (49 CFR 172.516(b)). Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.3.10 Placarding, page 9-9.

  24. Question 24Materials subject to spontaneous combustion or heating must be carried in vehicles with what?

    Show answer

    D: Sufficient ventilation. Materials that can heat up or ignite on their own must be carried in a well-ventilated vehicle. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.4.1 Precautions for Specific Hazards: Class 4 and Class 5, page 9-11.

  25. Question 25When may you transfer a flammable compressed gas from one tank to another on a public roadway?

    Show answer

    B: Only when fueling machinery used in road construction or maintenance. Moving flammable compressed gas from one tank to another on a public road is not allowed, except to fuel road construction or maintenance machinery. Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0): 9.7.4 Responses to Specific Hazards: Class 2 (Compressed Gases), page 9-16.

Answer every question to see your score.

Next: practice test 4

All practice tests

Our own questions, written from the Missouri Commercial Driver License Manual (AAMVA model CDL manual, Version 4.0), official manual, and checked against it.