CDL Hazmat Endorsement Practice Test 2026：第2套练习测试

1. 第1题，共25题

   While you drive, where must you keep hazmat shipping papers?

   • AIn the trailer with the load, near the rear doors
   • BWithin reach with your seat belt on, or in the door pouch
   • CIn the glove box of the company's office car
   • DIn the sleeper berth, in a locked drawer
   显示答案

   答案: B. Within reach with your seat belt on, or in the door pouch

   Keep the papers within your reach with your seat belt on, or in the pouch on the driver's door, so they are easy to find.

2. 第2题，共25题

   When you leave the cab, where should you put the hazmat shipping papers?

   • AIn your pocket, so no one can take them
   • BOn the driver's seat or in the door pouch
   • CIn the sleeper berth, out of sight
   • DIn the trailer, with the hazmat load
   显示答案

   答案: B. On the driver's seat or in the door pouch

   Leave the papers where emergency responders can find them: on the driver's seat or in the door pouch.

3. 第3题，共25题

   How should hazmat shipping papers be kept with other papers in the cab?

   • AFolded inside your logbook or tablet
   • BAt the bottom of the pile of papers
   • CMixed in with all the other papers
   • DTabbed or on top of the other papers
   显示答案

   答案: D. Tabbed or on top of the other papers

   Hazmat papers must be easy to find: tabbed or on top of other shipping papers.

4. 第4题，共25题

   Which information must the emergency response information with a shipment cover?

   • AHealth hazards, fire risks, spill handling and first aid
   • BThe receiver's address and business hours
   • CThe price of the load and the shipper's bank
   • DThe driver's route and planned rest stops
   显示答案

   答案: A. Health hazards, fire risks, spill handling and first aid

   Emergency response information explains the dangers and what to do in a fire, leak or spill, including first aid.

5. 第5题，共25题

   How many placards must a placarded vehicle display?

   • AOne, on the back of the vehicle
   • BTwo, one on each side of the vehicle
   • CAt least four, one on each side and end
   • DOne, on the front of the vehicle
   显示答案

   答案: C. At least four, one on each side and end

   Placards must go on each side and each end of the vehicle.

6. 第6题，共25题

   From which directions must placards be readable?

   • AOnly from the front
   • BOnly from the driver's side
   • CAll four directions
   • DOnly from the rear
   显示答案

   答案: C. All four directions

   Placards must be placed so they can be read from all four directions.

7. 第7题，共25题

   How much of a Table 1 material requires placards?

   • A1,001 pounds or more
   • BAny amount
   • CMore than 5,000 pounds
   • D2,205 pounds or more
   显示答案

   答案: B. Any amount

   Table 1 materials must be placarded in any amount.

8. 第8题，共25题

   A truck carries a non-bulk load of Table 2 hazardous materials. At what total weight are placards required?

   • AAny amount
   • B10,000 pounds or more
   • C1,001 pounds or more
   • D500 pounds or more
   显示答案

   答案: C. 1,001 pounds or more

   Placards are not needed for less than 1,001 pounds aggregate gross weight of Table 2 materials in non-bulk packages.

9. 第9题，共25题

   Which of these materials requires placards in any amount?

   • ADivision 2.3 poison gas
   • BDivision 2.2 nonflammable gas
   • CClass 3 flammable liquid
   • DClass 8 corrosive
   显示答案

   答案: A. Division 2.3 poison gas

   Poison gas is a Table 1 material. The others are Table 2 materials.

10. 第10题，共25题

    Which of these is a Table 1 material?

    • ADivision 4.1 flammable solid
    • BDivision 4.3 dangerous when wet
    • CClass 9 miscellaneous
    • DDivision 5.1 oxidizer
    显示答案

    答案: B. Division 4.3 dangerous when wet

    Dangerous when wet (4.3) is in Table 1 and must be placarded in any amount.

11. 第11题，共25题

    Which explosives are Table 1 materials?

    • AOnly Division 1.6
    • BDivisions 1.1, 1.2 and 1.3
    • CNone; explosives are never Table 1
    • DDivisions 1.4, 1.5 and 1.6
    显示答案

    答案: B. Divisions 1.1, 1.2 and 1.3

    Divisions 1.1, 1.2 and 1.3 are in Table 1. Divisions 1.4, 1.5 and 1.6 are in Table 2.

12. 第12题，共25题

    You have 600 pounds of Division 1.1 explosives. Do you need placards?

    • ANo, explosives are never placarded
    • BYes, Table 1 needs placards in any amount
    • COnly if you drive at night
    • DNo, because it is under 1,001 pounds
    显示答案

    答案: B. Yes, Table 1 needs placards in any amount

    Division 1.1 is a Table 1 material, so any amount needs placards.

13. 第13题，共25题

    You have 800 pounds of a Class 8 corrosive in non-bulk packages and nothing else. Do you need placards?

    • AOnly if you cross a state line
    • BYes, any amount of hazmat needs placards
    • CNo, it is a Table 2 material under 1,001 pounds
    • DYes, corrosives always need placards
    显示答案

    答案: C. No, it is a Table 2 material under 1,001 pounds

    Table 2 materials in non-bulk packages need placards at 1,001 pounds or more aggregate gross weight.

14. 第14题，共25题

    Does the 1,001-pound exception for Table 2 materials apply to bulk packaging?

    • ANo, bulk packages need placards at any amount
    • BYes, it applies to all bulk packaging
    • COnly for liquids in bulk packaging
    • DOnly for Class 9 in bulk packaging
    显示答案

    答案: A. No, bulk packages need placards at any amount

    The under-1,001-pound exception does not apply to bulk packagings.

15. 第15题，共25题

    When may you use a DANGEROUS placard?

    • AFor two or more Table 2 categories on one load
    • BOnly for explosives in Division 1.4
    • CInstead of all other placards on any load
    • DFor any Table 1 material, in any amount
    显示答案

    答案: A. For two or more Table 2 categories on one load

    A DANGEROUS placard can replace separate Table 2 placards when the load has two or more Table 2 categories.

16. 第16题，共25题

    You use a DANGEROUS placard, but you load 2,205 pounds of one Table 2 category at one place. What must you do?

    • AUse only the DANGEROUS placard
    • BRemove all placards
    • CDisplay that category's own placard
    • DNothing more
    显示答案

    答案: C. Display that category's own placard

    If 1,000 kg (2,205 pounds) or more of one category is loaded at one facility, that category's placard must be shown.

17. 第17题，共25题

    A package has a Radioactive Yellow III label. When does the vehicle need a RADIOACTIVE placard?

    • AOnly over 2,205 pounds
    • BOnly over 1,001 pounds
    • CFor any amount
    • DNever
    显示答案

    答案: C. For any amount

    Radioactive materials with the Yellow III label are a Table 1 material and need placards in any amount.

18. 第18题，共25题

    Is a CLASS 9 placard required for domestic (U.S.) transportation?

    • AYes, but only for loads over 1,001 pounds
    • BYes, always, for any amount of Class 9
    • COnly when Class 9 is mixed with explosives
    • DNo, though bulk packages still need ID numbers
    显示答案

    答案: D. No, though bulk packages still need ID numbers

    A Class 9 placard is not required for domestic transport. Bulk packagings must still be marked with the ID number.

19. 第19题，共25题

    Your load has both flammable gas and nonflammable gas, and you placard for flammable gas. Do you also need a NON-FLAMMABLE GAS placard?

    • AYes, always
    • BOnly if the load is over 5,000 pounds
    • CNo
    • DOnly on the front
    显示答案

    答案: C. No

    A NON-FLAMMABLE GAS placard is not needed when the vehicle is placarded for flammable gas or oxygen.

20. 第20题，共25题

    You carry explosives from more than one Class 1 division. Which explosives placard do you display?

    • AThe placard for the highest division number
    • BNone; use the DANGEROUS placard instead
    • CThe placard for the lowest division number
    • DOne placard for every division carried
    显示答案

    答案: C. The placard for the lowest division number

    When more than one Class 1 division is carried, show only the placard for the lowest division number.

21. 第21题，共25题

    Which placard is used for materials that are poisonous by inhalation?

    • AFLAMMABLE GAS
    • BDANGEROUS WHEN WET
    • CPOISON INHALATION HAZARD
    • DCORROSIVE MATERIAL
    显示答案

    答案: C. POISON INHALATION HAZARD

    Division 6.1 materials that are poisonous by inhalation need the POISON INHALATION HAZARD placard in any amount.

22. 第22题，共25题

    Which hazard division needs no placard at all under the placard tables?

    • ADivision 1.1 explosives
    • BDivision 6.2 infectious substances
    • CDivision 4.3 dangerous when wet
    • DDivision 2.3 poison gas
    显示答案

    答案: B. Division 6.2 infectious substances

    The placard table lists NONE for Division 6.2.

23. 第23题，共25题

    What should you do with the parking brake before loading or unloading hazardous materials?

    • ASet it
    • BRemove it
    • CRelease it
    • DIt does not matter
    显示答案

    答案: A. Set it

    Set the parking brake so the vehicle cannot move during loading and unloading.

24. 第24题，共25题

    Which tools should you NOT use when handling hazmat packages?

    • AWork gloves made for the job
    • BHooks or tools that can damage packages
    • CHand trucks used with care
    • DPallet jacks used carefully
    显示答案

    答案: B. Hooks or tools that can damage packages

    Do not use hooks or tools that could puncture or damage packages.

25. 第25题，共25题

    How close to a vehicle being loaded with explosives, oxidizers or flammables may anyone smoke?

    • A10 feet
    • B50 feet is required only at night
    • CNo closer than 25 feet
    • DSmoking is allowed if the doors are closed
    显示答案

    答案: C. No closer than 25 feet

    No one may smoke within 25 feet of these materials.

键盘：按1–4作答，按 Enter 进入下一题。

真实考试：Varies by state; usually 30 questions, with 24 correct needed (80%)