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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. Placards must be placed:
on the rear only.
on the front, rear and both sides of the vehicle.
on the front only.
2. Which of the following statements about tankers is true?
When loading and unloading smaller tanks, do not put too much weight on the front or rear of the vehicle.
A high center of gravity makes a vehicle more prone to rollover accidents.
All of the above.
3. Shipping papers should be:
placed on all sides of the vehicle.
easily seen by someone entering the cab.
easily seen from the direction they face.
4. When parked on the side of the road, you should:
flash your brake lights.
use the 4-way emergency flashers.
turn off all lights.
5. If you are carrying a heavy load that is slowing you down, you should:
drive in the right lane.
drive in the left lane.
drive on the shoulder.
6. The steering wheel should:
be held firmly with both hands.
be held firmly with the right hand.
be held firmly with the left hand.
7. If you're feeling tired while driving you should:
stop driving and get some rest.
drink coffee.
eat something.
8. Before driving a tank, you should:
All of the above.
check the intake, discharge, and cut-off valves.
check the tank's body for dents.
9. Explosives, flammable gases and flammable liquids should not be placed in a cargo space that has:
a heater.
an air conditioner.
10. Which of the following statements about stopping distance and speed is true?
The lighter the vehicle, the more work the brakes must do to stop it.
Fully loaded trucks require greater stopping distances.
Wet roads can double stopping distance.
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OK CDL Tanker Endorsement

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