CDL Hazmat Endorsement Practice Test 2026: Übungstest 4

Übungstest 4 von 4 für den Test „CDL Hazmat Endorsement Practice Test“: 15 weitere Fragen mit Antworten und Erklärungen.

Nutzfahrzeug
Vereinigte Staaten
90 Fragen
Geprüft am 10. Oktober 2026

Frage 1 von 15
You stop near a vehicle carrying flammable liquid. What warning devices should you use?
- Fusees placed behind the vehicle
- Burning flares set close to the truck
- Reflective triangles or red electric lights
- Open-flame lanterns on the road
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Antwort: C. Reflective triangles or red electric lights
Never use burning flares or fusees near flammable cargo. Use reflective triangles or red electric lights.
Frage 2 von 15
Which routes should placarded hazmat vehicles avoid when possible?
- Crowded areas, tunnels and narrow streets
- Signed truck routes and bypasses
- Roads with truck stops and rest areas
- Interstate highways and freeways
Antwort anzeigen
Antwort: A. Crowded areas, tunnels and narrow streets
Unless there is no practical choice, avoid heavily populated areas, crowds, tunnels and narrow streets.
Frage 3 von 15
What must the carrier give a driver hauling Division 1.1, 1.2 or 1.3 explosives?
- Only a road map and the delivery address
- Nothing beyond the normal shipping papers
- Only a spare set of placards for the trip
- A written route plan, the rules, and emergency instructions
Antwort anzeigen
Antwort: 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.
Frage 4 von 15
What special equipment must you carry when hauling chlorine in a cargo tank?
- A gas can and a hand pump
- An approved gas mask and a leak kit
- Snow chains and extra cross-links
- A spare battery and jumper cables
Antwort anzeigen
Antwort: B. An approved gas mask and a leak kit
Drivers hauling chlorine must have an approved gas mask and an emergency kit for leaks.
Frage 5 von 15
Which book helps emergency workers decide what to do with a hazmat spill?
- The model CDL manual
- The vehicle owner's manual
- The driver's daily logbook
- The Emergency Response Guidebook
Antwort anzeigen
Antwort: 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.
Frage 6 von 15
You are in a hazmat crash. What should you do with the shipping papers?
- Leave them locked inside the trailer
- Throw them away to avoid confusion
- Keep them and give them to responders
- Hide them in the cab to protect them
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Antwort: C. Keep them and give them to responders
Emergency workers need the shipping papers to know what is in the load.
Frage 7 von 15
After a hazmat crash or leak, where should you keep people?
- Close by to help
- Downwind of the spill
- Inside the trailer
- Far away and upwind
Antwort anzeigen
Antwort: D. Far away and upwind
Keep people far away from the scene and upwind of the material.
Frage 8 von 15
Material is leaking from a package. What should you NOT do?
- Call for help right away
- Touch or smell the material
- Warn others of the danger
- Keep people away from it
Antwort anzeigen
Antwort: B. Touch or smell the material
Never touch or smell leaking material. Find out what it is from the shipping papers and labels.
Frage 9 von 15
Should a driver fight a hazmat fire?
- Not unless trained and equipped to do so
- Yes, by opening the trailer to let smoke out
- Yes, with any extinguisher
- Yes, always with water
Antwort anzeigen
Antwort: 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.
Frage 10 von 15
There may be a fire in your trailer. What should you do before opening the doors?
- Open them quickly to check the load
- Spray water in through a small crack
- Feel the doors for heat; don't open if hot
- Drive faster so the wind cools it
Antwort anzeigen
Antwort: C. Feel the doors for heat; don't open if hot
Opening hot doors can feed a fire with air. Feel for heat first.
Frage 11 von 15
After a crash, how far should explosives be moved from vehicles and occupied buildings?
- At least 200 feet
- At least 50 feet
- At least 1 mile
- At least 10 feet
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Antwort: A. At least 200 feet
If it is safe to unload them, place explosives at least 200 feet from vehicles and occupied buildings.
Frage 12 von 15
What is the phone number of the National Response Center?
- 1-888-373-7888
- 911 only
- 1-800-424-9300
- 1-800-424-8802
Antwort anzeigen
Antwort: 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.
Frage 13 von 15
What is CHEMTREC?
- A type of placard used on tank trucks
- A hazard class for chemical waste
- A 24-hour hazmat emergency information center
- A brand of dry chemical fire extinguisher
Antwort anzeigen
Antwort: C. A 24-hour hazmat emergency information center
CHEMTREC is a 24-hour center that gives emergency workers technical information about hazardous materials.
Frage 14 von 15
After a leak of radioactive material, when may the vehicle be used again?
- Right away, once the leaking package is removed
- After it is washed down with plenty of water
- After it is parked outside for at least 24 hours
- Only after it is cleaned and checked with a meter
Antwort anzeigen
Antwort: 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.
Frage 15 von 15
Which of these is part of the driver's role at a hazmat emergency?
- Keeping people away and warning responders
- Moving leaking packages by hand
- Driving the vehicle away from the scene
- Cleaning up the spill alone right away
Antwort anzeigen
Antwort: 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.

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