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CDL HAZMAT PRACTICE TEST VIRGINIA

11. If your placarded trailer has dual tires, you should check the tires:
once every 3 months.
once every 100 miles.
at the start of each trip and every time you stop.
12. If your vehicle thumps or vibrates heavily, it may be a sign that:
the brakes have failed.
you need to shift up.
one of the tires has gone flat.
13. Air brakes use ________ to make the brakes work.
compressed gas cylinders
compressed air
compressed gases
14. What should you do if you doubt you have safe space to pass under a low bridge?
If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
Increase the weight of your vehicle to clearing under the bridge.
Go slowly, and take another route if you are not sure you can make it.
15. Which of the following is NOT something you must know in order to determine if you need to use placards?
The manufacturing date of the materials.
The amount of all hazardous materials of all classes on your vehicle.
The amount of hazardous material being shipped.
16. Which of the following is a common cause of truck fires?
Under-inflated tires and duals that touch.
Short circuits due to loose connections.
All of the above.
17. If the vehicle ahead of you is smaller than yours:
it can probably stop faster than you can.
it will usually take longer to stop.
it will take the same amount of time to stop.
18. When transporting chlorine in cargo tanks, you must have _______ in the vehicle.
5 reflective triangles
an approved gas mask
approved goggles
19. Before transporting sealed loads, you should check that:
the seal numbers match the placard numbers.
the load is properly secured.
the load can be inspected.
20. Checking the automatic transmission fluid level may require:
the engine to be running.
the vehicle to be parked downhill.
the 4-way emergency flashers to be activated.
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