PassEveryTest
中文

CDL Hazmat Endorsement Practice Test 2026：第4套练习测试

CDL Hazmat Endorsement Practice Test 练习测试第4套（共4套）：再练15道题，附答案和解释。

  • 商用车辆
  • 美国
  • 90道题
  • 核对于2026年10月10日

  1. 第1题，共15题

    You stop near a vehicle carrying flammable liquid. What warning devices should you use?
    显示答案

    答案: C. Reflective triangles or red electric lights

    Never use burning flares or fusees near flammable cargo. Use reflective triangles or red electric lights.

  2. 第2题，共15题

    Which routes should placarded hazmat vehicles avoid when possible?
    显示答案

    答案: A. Crowded areas, tunnels and narrow streets

    Unless there is no practical choice, avoid heavily populated areas, crowds, tunnels and narrow streets.

  3. 第3题，共15题

    What must the carrier give a driver hauling Division 1.1, 1.2 or 1.3 explosives?
    显示答案

    答案: D. A written route plan, the rules, and emergency instructions

    Carriers must give the driver a written route plan, a copy of Part 397, and emergency procedures, and the driver signs for them.

  4. 第4题，共15题

    What special equipment must you carry when hauling chlorine in a cargo tank?
    显示答案

    答案: B. An approved gas mask and a leak kit

    Drivers hauling chlorine must have an approved gas mask and an emergency kit for leaks.

  5. 第5题，共15题

    Which book helps emergency workers decide what to do with a hazmat spill?
    显示答案

    答案: D. The Emergency Response Guidebook

    The DOT Emergency Response Guidebook is used by firefighters and police. It is indexed by shipping name and ID number.

  6. 第6题，共15题

    You are in a hazmat crash. What should you do with the shipping papers?
    显示答案

    答案: C. Keep them and give them to responders

    Emergency workers need the shipping papers to know what is in the load.

  7. 第7题，共15题

    After a hazmat crash or leak, where should you keep people?
    显示答案

    答案: D. Far away and upwind

    Keep people far away from the scene and upwind of the material.

  8. 第8题，共15题

    Material is leaking from a package. What should you NOT do?
    显示答案

    答案: B. Touch or smell the material

    Never touch or smell leaking material. Find out what it is from the shipping papers and labels.

  9. 第9题，共15题

    Should a driver fight a hazmat fire?
    显示答案

    答案: A. Not unless trained and equipped to do so

    Don't try to fight hazardous materials fires unless you have the right training and equipment.

  10. 第10题，共15题

    There may be a fire in your trailer. What should you do before opening the doors?
    显示答案

    答案: C. Feel the doors for heat; don't open if hot

    Opening hot doors can feed a fire with air. Feel for heat first.

  11. 第11题，共15题

    After a crash, how far should explosives be moved from vehicles and occupied buildings?
    显示答案

    答案: A. At least 200 feet

    If it is safe to unload them, place explosives at least 200 feet from vehicles and occupied buildings.

  12. 第12题，共15题

    What is the phone number of the National Response Center?
    显示答案

    答案: D. 1-800-424-8802

    The National Response Center, 1-800-424-8802, takes reports of hazmat spills and passes them to the right agencies.

  13. 第13题，共15题

    What is CHEMTREC?
    显示答案

    答案: C. A 24-hour hazmat emergency information center

    CHEMTREC is a 24-hour center that gives emergency workers technical information about hazardous materials.

  14. 第14题，共15题

    After a leak of radioactive material, when may the vehicle be used again?
    显示答案

    答案: D. Only after it is cleaned and checked with a meter

    Notify your dispatcher. The vehicle may not be used until it is decontaminated and checked.

  15. 第15题，共15题

    Which of these is part of the driver's role at a hazmat emergency?
    显示答案

    答案: A. Keeping people away and warning responders

    Keep people away, limit the spread only if you can do it safely, communicate the danger, and give information to responders.

相关测试