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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. The steering wheel should:
be held firmly with both hands.
be held with one hand at a time.
be held firmly with the left hand.
be held firmly with the right hand.
2. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
3. When driving a 50-foot truck at 40 mph, your minimum following distance should be:
4 seconds
8 seconds
5 seconds
6 seconds
4. To keep your vehicle from rolling back when you start, you should:
apply the emergency brake whenever necessary.
partly engage the clutch before you take your foot off the brake.
pump the brakes.
turn the engine off before you take your foot off the brake.
5. To make sure you know how to inspect your tank vehicle, you should:
ask your supervisor what you should inspect first.
use a helper whenever possible.
check the vehicle's operator manual.
phone the manufacturer before the inspection.
6. If the vehicle ahead of you is smaller than yours:
it will usually take longer to stop.
it can probably stop faster than you can.
it will take the same amount of time to stop.
All of the above.
7. A high center of gravity is most dangerous:
when the tank is empty.
in construction zones.
when driving below the speed limit.
in curves.
8. With the controlled braking method:
you apply your brakes all the way and release the brakes when the wheels lock up.
you lightly tap the brakes.
you use the parking brake to lock the wheels.
you apply your brakes as hard as possible without locking the wheels.
9. A high center of gravity:
requires special transit permits.
makes the vehicle easy to roll over.
improves fuel efficiency.
makes the vehicle less likely to roll over.
10. Which of the following is not a way to know when to change gears?
Use road speed (mph)
Check that the pressure gauge shows normal oil pressure
Use engine speed (rpm)
Watch your tachometer
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WI CDL Tanker Endorsement

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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