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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 Washington CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The WA tanker test covers the following sections of the Washington CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this WA tanker practice test now to prepare for the actual test!
1. The height of the vehicle's center of gravity:
should only be a concern when driving a vehicle.
should only be a concern when loading a vehicle.
is very important for safe handling.
2. What is the main difference between portable tanks and cargo tanks?
Portable tanks are not permanently attached to a vehicle.
The product is loaded or unloaded while the portable tanks are off the vehicle.
All of the above.
3. Emergency brakes are:
not required on buses.
required on all vehicles.
not required on doubles.
4. To obtain the HazMat endorsement, you must pass a ________ background check.
Transportation Security Administration
Law Enfrocement Agency
Local Department of Security
5. Pre-trip inspections are:
required by law
required only for trips of more than 50 miles.
6. When driving a 60-foot truck at 50 mph, your minimum following distance should be:
5 seconds
7 seconds
6 seconds
7. Which of the following statements about drivers fixing an engine or changing a tire is true?
They usually pay attention to the danger roadway traffic is to them.
They often do not pay attention to roadway traffic.
Roadway traffic is not a danger to them.
8. To control surge, you should:
keep a steady pressure on the brakes.
brake far in advance of a stop.
All of the above.
9. While crossing railroad tracks, you should:
shift up.
not shift gears.
shift down.
10. When backing a trailer, you should turn the steering wheel to the right to make the trailer go left (or vice versa). Once the trailer starts to turn, you should:
keep backing up.
turn the wheel more  in the direction you want to go.
turn the wheel the other way to follow the trailer.
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WA CDL Tanker Endorsement

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