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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 South Dakota CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The SD tanker test covers the following sections of the South Dakota CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this SD tanker practice test now to prepare for the actual test!
1. Which of the following is not a way to know when to change gears?
Use engine speed (rpm)
Watch your tachometer
Use road speed (mph)
Check that the pressure gauge shows normal oil pressure
2. Baffled liquid tanks have:
bulkheads in them with holes that let the liquid flow through.
separate tanks inside the trailer.
hollow balls floating in the liquid to slow movement.
None of the above.
3. Passive railroad crossings:
require drivers to decide if there is sufficient clear space to cross safely.
have a traffic control device installed at the crossing to regulate traffic.
do not require you to recognize the crossing.
All of the above.
4. Which of the following statements about backing heavy vehicles is true?
The helper should stand where you cannot see the helper.
You should avoid backing whenever you can.
Always back as quickly as possible.
Back to the right side so that you can see better.
5. In vehicles with air brakes, the two markings on a front brake limiting valve are:
wet and dry.
left and right.
normal and slippery.
high and low.
6. Watch out for black ice:
any time the temperature is below freezing and the road looks wet.
right after it starts to rain.
when it is snowing.
when the temperature is above freezing and the road is dry.
7. Before driving a tanker, the driver should:
make sure that the tank is empty.
inspect the vehicle.
change tires.
All of the above.
8. When driving a tanker vehicle, the best way to take a curve is to slow to a safe speed before entering the curve and then _______ as you go through the curve.
speed up slightly
brake lightly
downshift to the right gear
reduce your speed
9. To prevent rollover, you should:
drive slowly around on ramps and off ramps.
keep the cargo as close to the ground as possible.
go slowly around turns.
All of the above.
10. Which of these statements about using your mirrors is FALSE?
There are blind spots that your mirrors cannot show you.
When driving, you should check mirrors regularly to know where other vehicles are around you.
You should use your mirrors to spot overtaking vehicles.
None of the above.
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SD CDL Tanker Test

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