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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 Oklahoma CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The OK tanker test covers the following sections of the Oklahoma CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this OK tanker practice test now to prepare for the actual test!
1. To prevent rollover, you should:
keep the cargo as close to the ground as possible.
place the cargo near the rear of the trailer.
put the lightest parts of the cargo under the heaviest parts.
2. The two ways of knowing when to shift are:
weather and road conditions.
following distance and traffic speed.
engine speed and road speed.
3. Before driving a tanker, the driver should:
inspect the vehicle.
change tires.
make sure that the tank is empty.
4. You are inspecting your vehicle during a trip. What should you do?
Check critical items such as tires, brakes, and lights.
Use your senses to check for problems.
All of the above.
5. Warnings on low bridges or underpasses:
are always posted.
are often posted, but sometimes they are not.
must be posted.
6. If your vehicle is hydroplaning, you should:
speed up.
put the vehicle in reverse.
stay off the brake.
7. To know if your vehicle is equipped with ABS, look for:
the ABS logo on the steering wheel.
an ABS placard.
a yellow ABS malfunction lamps on the instrument panel.
8. Brake fade results from:
excessive heat caused by using brakes too much.
wet brakes.
using brakes in cold weather.
9. When it comes to hazardous materials transportation, the shipper:
takes the shipment from to its destination.
must package, mark, and label the materials.
placards the vehicle when loading, if required.
10. If a material is transported in a reportable quantity, the shipper displays the letters ___ on the shipping paper and package.
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Tanker Test - OK CDL

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