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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. Overloading can have bad effects on all of the following except:
Speed control
Exhaust system
2. Which of the following statements about retarders is NOT correct?
You should turn the retarder off whenever the road is wet, icy, or snow covered.
Retarders help slow a vehicle, reducing the need for using brakes.
Retarders reduceĀ reduce brake wear.
RetardersĀ help you avoid skids.
3. To prevent rollover, you should:
drive slowly around on ramps and off ramps.
go slowly around turns.
keep the cargo as close to the ground as possible.
All of the above.
4. A shipping paper for HazMat must include:
a shipper's certification signed by the shipper.
page numbers if the shipping paper has more than 1 page.
a proper shipping description for each HazMat.
All of the above.
5. Skids caused by acceleration can usually be stopped by:
taking your foot off the accelerator.
swerving to the right.
applying the brakes firmly.
swerving to the left.
6. Baffled liquid tanks:
make tank vehicles seem heavier than they really are.
help control the forward and backward liquid surge.
handle the same way as tankers without baffles.
help control side to side liquid surge.
7. ________ is responsible for identifying the hazard class of the material when shipping.
The supply chain manager
The shipper
The motor carrier
The driver
8. The heavier the vehicle:
the less work the brakes must do to stop it.
the higher the center of gravity will be.
the more work the brakes must do to stop it.
None of the above.
9. You should be especially alert for drunk drivers:
in the morning.
in the early evening.
around shopping areas.
late at night.
10. If you are feeling sleepy, you should:
slow down.
get some coffee.
drive faster.
pull off the road and rest.
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CO Tanker Test

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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