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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 Wisconsin CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The WI tanker test covers the following sections of the Wisconsin CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this WI tanker practice test now to prepare for the actual test!
1. If your brakes fail on a steep mountain downgrade, you should:
decide what to do as soon as you know your brakes do not work.
stay on the road and keep looking for the next available escape ramp.
set the parking brake and park in an open area.
slow down until your vehicle comes to a complete stop.
2. A high center of gravity:
means you'll have better traction.
helps the vehicle be more stable while turning.
means your vehicle is more likely to tip over.
is less dangerous in curves.
3. When the wheels of a trailer lock up:
the vehicle will gradually come to a complete stop.
ABS will increase stopping power.
the trailer will tend to swing around.
All of the above.
4. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
10, 100 and 200 feet
5, 25 and 50 feet
5, 50 and 500 feet
3, 15 and 45 feet
5. A shipping paper for HazMat must include:
a shipper's certification signed by the shipper.
page numbers if the shipping paper has more than 1 page.
a proper shipping description for each HazMat.
All of the above.
6. In baffled tanks, the baffles help to control:
the forward and backward liquid surge.
control the brakes.
the side-to-side liquid surge.
the top-to-bottom liquid surge.
7. Which of the following statements about retarders is NOT correct?
You should turn the retarder off whenever the road is wet, icy, or snow covered.
Retarders help you avoid skids.
Retarders help slow a vehicle, reducing the need for using brakes.
Retarders reduce reduce brake wear.
8. If your placarded trailer has dual tires, you should check the tires:
once every 3 months.
once a week.
once every 500 miles.
at the beginning of each trip and each time the vehicle is parked.
9. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
listed at the bottom.
entered first.
identified by an "H" placed before the shipping description.
written in a larger font.
10. How does liquid surge affect the handling of a tank vehicle?
It's very important for safe handling.
It tends to push the truck in the direction the wave is moving.
It makes it easier to slow down to a safe speed.
It makes the road slippery.
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WI CDL Tanker Test

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