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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 Alabama CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The AL tanker test covers the following sections of the Alabama CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this AL tanker practice test now to prepare for the actual test!
1. Hauling liquids in tanks requires special skill because of:
liquid movement.
the high center of gravity.
danger of surge.
All of the above.
2. Before driving a tank, you should:
check the tank's body for dents.
make sure manhole covers have gaskets and they close correctly.
check the intake, discharge, and cut-off valves.
All of the above.
3. Empty trucks:
require the same stoppingĀ distance than full trucks.
require a greaterĀ stopping distance than full trucks.
require a shorter stoppingĀ distance than full trucks.
None of the above.
4. If your trailer starts to skid, you should:
lock the brakes.
release the brakes.
pump the brakes.
steer in the opposite direction.
5. Different materials expand:
at rates determined by road conditions.
at different rates.
at the same rate.
None of the above.
6. Empty vans are:
lower than fully loaded ones.
higher than fully loaded ones.
the same height as fully loaded ones.
None of the above.
7. When fueling a vehicle containing hazardous materials, you should:
call your supervisor.
leave the engine on.
leave the nozzle unattended.
turn off the engine.
8. What is Gross Vehicle Weight?
The total weight of a combination of vehicles excluding the load
The total weight of a single vehicle, excluding its load
The total weight of the cargo
The total weight of a single vehicle, including its load
9. Class 1 hazardous materials include:
Radioactive materials
Flammable liquids
Flammable solids
10. Emergency lines are often coded with the color ___ to keep from getting them mixed up with the service line.
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AL CDL Tanker Test

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