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The tanker endorsement applies to drivers who wish to drive a tank in Class A, B, or C CDL. To add this endorsement to your CLP/CDL, you must pass a knowledge test on the problems posed by large volume liquid cargos. The Tennessee CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The TN tanker test covers the following sections of the Tennessee CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this TN tanker practice test now to prepare for the actual test!
1. If a material is transported in a reportable quantity, the shipper displays the letters ___ on the shipping paper and package.
2. Brake lag is:
the distance your vehicle will travel, in ideal conditions, while you are braking.
the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
the time required for the air brakes to work after the brake pedal is pushed.
the amount of air pressure required to stop the vehicle.
3. If there is a fire and you are not sure what to use to put it out, you should:
use a fire extinguisher.
use water.
wait for firefighters.
use dry powder.
4. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
3, 15 and 45 feet
10, 100 and 200 feet
5, 50 and 500 feet
5, 25 and 50 feet
5. When checking the lights before driving:
you should turn off the engine.
you should check them from inside the vehicle.
make sure the parking brake is not set.
the engine must be running.
6. When coupling, you should:
make sure the trailer wheels are not chocked.
make sure the trailer kingpin is bent.
be aware that wrong coupling and uncoupling can be very dangerous.
make sure the sliding fifth-wheel is locked.
7. If a tire fails while you are driving, you should:
brake as hard as possible.
stop on the roadway if possible.
stay off the brake until your vehicle has slowed down.
call your supervisor for instructions.
8. Baffled liquid tanks:
make tank vehicles seem heavier than they really are.
help control the forward and backward liquid surge.
handle the same way as tankers without baffles.
help control side to side liquid surge.
9. If the engine catches fire, you should:
turn off the engine as soon as you can.
avoid shooting foam from the vehicle's underside.
pull into a service station and notify the emergency services.
open the hood as soon as you can.
10. When checking the engine compartment in a vehicle inspection, you should check all of the following except:
Spring hangers
Coolant level in radiator
Engine oil level
Windshield washer fluid level
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TN Tanker CDL Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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