MAINE CDL TANKER PRACTICE TEST

11. When fueling a vehicle containing hazardous materials, you should:
leave the engine on.
turn off the engine.
leave the nozzle unattended.
12. A placarded vehicle must have at least ___ identical placards.
2
3
4
13. A full tank of dense liquid (such as some acids) may:
weigh less than a tank filled with other liquids.
exceed legal weight limits.
be subject to travel restrictions.
14. Carrying liquids or gases in a leaking tank:
should be avoided whenever possible.
should only be done for shorter trips.
is illegal.
15. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
hold compressed air.
keep from rolling back.
prevent movement of cargo.
16. What is the main difference between portable tanks and cargo tanks?
Portable tanks are not permanently attached to a vehicle.
The product is loaded or unloaded while the portable tanks are off the vehicle.
All of the above.
17. If you are feeling sleepy, you should:
pull off the road and rest.
slow down.
get some coffee.
18. Emergency equipment is:
optional.
only required when transporting hazardous materials.
required.
19. Dual tires:
should come in contact with each other whenever possible.
should always come in contact with each other.
should not come in contact with each other.
20. Most heavy-duty vehicles use:
air brakes.
hydraulic brakes.
solid brakes.
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