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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. A liquid tank is divided into several smaller tanks by bulkheads. After filling the smaller tanks, most of the weight should be in the:
rear of the vehicle.
top of the tank.
middle of the vehicle.
front of the vehicle.
2. Emergency brakes must be held on by:
air pressure.
mechanical force.
hydraulic pressure.
dynamic pressure.
3. To control surge, you should:
keep a steady pressure on the brakes.
brake far in advance of a stop.
not release the brakes too soon when coming to a stop.
All of the above.
4. Engine oil pressure should come up to normal within _________ after the engine is started.
two minutes
ten minutes
five minutes
5. 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:
turn the wheel the other way to follow the trailer.
keep backing up.
turn the wheel more  in the direction you want to go.
None of the above.
6. How does liquid surge affect the handling of a tank vehicle?
It makes it easier to slow down to a safe speed.
It tends to push the truck in the direction the wave is moving.
It makes the road slippery.
It's very important for safe handling.
7. When driving a tanker, you should:
stop every 50 miles to inspect your vehicle.
increase your following distance.
decrease your following distance.
drive 10 mph below the posted speed limit.
8. When driving a 50-foot truck at 40 mph, your minimum following distance should be:
4 seconds
5 seconds
8 seconds
6 seconds
9. Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
10 psi
75 psi
50 psi
100 psi
10. Which of the the following statements about fatigue is true?
Fatigue may cause you to not see and react to hazards.
Fatigue impairs your vision and judgment.
Fatigued driving is one of the leading causes of accidents.
All of the above.
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CO Tanker CDL 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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