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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 Wyoming CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The WY tanker test covers the following sections of the Wyoming CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this WY tanker practice test now to prepare for the actual test!
1. Unbaffled liquid tankers have nothing inside to slow down the flow of the liquid. Therefore:
top-to-bottom surge is very strong.
side-to-side surge is very strong.
forward-and-back surge is very strong.
All of the above.
2. A placarded vehicle must have at least ___ identical placards.
3. How can drivers help control surge?
By releasing the brakes soon when coming to a stop.
By decreasing following distance.
By braking far in advance of a stop.
All of the above.
4. When approaching a stopped school bus, drivers must be aware that:
the bus may suddenly start up and drive into your way.
students may start to get out of the bus.
passengers may cross in front of or behind the bus.
All of the above.
5. Which of the following statements about drivers fixing an engine or changing a tire is true?
Roadway traffic is not a danger to them.
They must park within 5 feet of the roadway.
They often do not pay attention to roadway traffic.
They usually pay attention to the danger roadway traffic is to them.
6. You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
Brake hard to slow the vehicle, then steer sharply onto the pavement.
Keep moving at the present speed and steer very gently back onto the pavement.
If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
None of the above.
7. Skids caused by acceleration can usually be stopped by:
swerving to the right.
swerving to the left.
applying the brakes firmly.
taking your foot off the accelerator.
8. To avoid blinding others, you should dim your lights within _____  of an oncoming vehicle.
None of the above.
9. Forward-and-back liquid surge is very strong in:
unbaffled tanks.
baffled tanks.
dry tanks.
All of the above.
10. Your mirrors should be adjusted so that:
the rear of the vehicle is visible in the mirror.
a part of the vehicle is visible in the mirror.
more than half of the mirror shows the vehicle.
no part of the vehicle is visible in the mirror.
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WY CDL Tanker Test

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