CDL Hazmat Endorsement Practice Test 2026: Test próbny 4

Test próbny 4 z 4 – CDL Hazmat Endorsement Practice Test: kolejne pytania z odpowiedziami i wyjaśnieniami (liczba pytań: 15).

Pojazdy ciężarowe
Stany Zjednoczone
Pytania: 90
Sprawdzono 10 października 2026

Pytanie 1 z 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
Pokaż odpowiedź
Odpowiedź: C. Reflective triangles or red electric lights
Never use burning flares or fusees near flammable cargo. Use reflective triangles or red electric lights.
Pytanie 2 z 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
Pokaż odpowiedź
Odpowiedź: A. Crowded areas, tunnels and narrow streets
Unless there is no practical choice, avoid heavily populated areas, crowds, tunnels and narrow streets.
Pytanie 3 z 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
Pokaż odpowiedź
Odpowiedź: 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.
Pytanie 4 z 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
Pokaż odpowiedź
Odpowiedź: B. An approved gas mask and a leak kit
Drivers hauling chlorine must have an approved gas mask and an emergency kit for leaks.
Pytanie 5 z 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
Pokaż odpowiedź
Odpowiedź: 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.
Pytanie 6 z 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
Pokaż odpowiedź
Odpowiedź: C. Keep them and give them to responders
Emergency workers need the shipping papers to know what is in the load.
Pytanie 7 z 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
Pokaż odpowiedź
Odpowiedź: D. Far away and upwind
Keep people far away from the scene and upwind of the material.
Pytanie 8 z 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
Pokaż odpowiedź
Odpowiedź: B. Touch or smell the material
Never touch or smell leaking material. Find out what it is from the shipping papers and labels.
Pytanie 9 z 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
Pokaż odpowiedź
Odpowiedź: 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.
Pytanie 10 z 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
Pokaż odpowiedź
Odpowiedź: C. Feel the doors for heat; don't open if hot
Opening hot doors can feed a fire with air. Feel for heat first.
Pytanie 11 z 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
Pokaż odpowiedź
Odpowiedź: A. At least 200 feet
If it is safe to unload them, place explosives at least 200 feet from vehicles and occupied buildings.
Pytanie 12 z 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
Pokaż odpowiedź
Odpowiedź: 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.
Pytanie 13 z 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
Pokaż odpowiedź
Odpowiedź: C. A 24-hour hazmat emergency information center
CHEMTREC is a 24-hour center that gives emergency workers technical information about hazardous materials.
Pytanie 14 z 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
Pokaż odpowiedź
Odpowiedź: 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.
Pytanie 15 z 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
Pokaż odpowiedź
Odpowiedź: 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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