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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 Colorado CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The CO tanker test covers the following sections of the Colorado CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this CO tanker practice test now to prepare for the actual test!
1. If you are stopped on an incline, how can you start moving without rolling back?
Shift to neutral
Fully engage the clutch
Aggressively pump the accelerator
Apply the parking brake
2. When driving trucks with trailers, drivers should:
push the brake pedal to the floor when braking.
make quick lane changes.
avoid making sudden movements with the steering wheel.
decrease their following distance.
3. Air tank drains:
protect the tanks and the rest of the system from too much pressure.
are used to move air to the brakes.
should not be used in wet weather.
are used to remove water and oil from the air tanks.
4. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
highlighted in a contrasting color.
listed at the bottom.
in the same color as the non-hazardous materials.
listed in yellow ink.
5. If a tire fails while you are driving, you should:
stop on the roadway if possible.
call your supervisor for instructions.
stay off the brake until your vehicle has slowed down.
brake as hard as possible.
6. Brake lag is:
the time required for the air brakes to work after the brake pedal is pushed.
the distance your vehicle will travel, in ideal conditions, while you are braking.
the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
the amount of air pressure required to stop the vehicle.
7. If a material is transported in a reportable quantity, the shipper displays the letters ___ on the shipping paper and package.
8. If the ABS is not working:
the truck will have no brakes.
you should immediately reduce your speed.
the truck will still have normal brakes.
All of the above.
9. Move-over laws require drivers to _________ when approaching an emergency vehicle stopped on the roadside or a work zone.
change direction
sound their horn
slow down and change lanes
10. If a vehicle is equipped with ABS, when you start the engine:
the wheels will lock up.
the trailer emergency brakes will come on.
the spring brakes will come on.
the ABS indicator light on the dash should come on and then turn off.
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CO 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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