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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. Placards must be placed:
on the driver's side of the vehicle.
on the rear only.
on the front, rear and both sides of the vehicle.
on the front only.
2. If you are carrying a heavy load that is slowing you down, you should:
keep the vehicle in third gear.
drive in the right lane.
drive in the left lane.
drive on the shoulder.
3. You or your employer must call the National Response Center when any of the following occur as a direct result of a HazMat incident, EXCEPT:
a person is killed.
spillage occurs.
an injured person requires hospitalization.
black ice makes the road look wet.
4. When stopping with a tanker, you must be aware that:
the amount of liquid in the tank has no influence on the stopping distance.
wet roads will provide more traction than dry roads.
a fully loaded vehicle takes less room to stop than an empty vehicle.
a fully loaded vehicle requires a greater stopping distance because it has less traction.
5. Most heavy-duty vehicles use:
solid brakes.
hydraulic brakes.
air brakes.
pressure brakes.
6. The only acceptable way to check tire pressure is to:
push on the tire to feel the pressure.
use a tire pressure gauge.
check the minimum tread depth.
None of the above.
7. You must know the outage requirement when hauling liquids in bulk. Why?
Some of the heaviest liquids don't need any outage.
You must never leave room for the expanding liquid.
Different liquids expand by different amounts as they warm.
All of the above.
8. A full tank of dense liquid (such as some acids) may:
exceed legal weight limits.
weigh less than a tank filled with other liquids.
reduce the size of the vehicle.
be subject to travel restrictions.
9. Column 2 in the Hazardous Material Table contains:
the label codes.
the identification numbers.
the hazard class or division.
the HazMat description and shipping name.
10. Most heavy trucks with manual transmissions require ____ to change gears.
triple clutching
single clutching
double clutching
None of the above.
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CO CDL Tanker Test

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