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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 Oregon CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The OR tanker test covers the following sections of the Oregon CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this OR tanker practice test now to prepare for the actual test!
1. Retarders:
improve traction.
can be noisy and may not be permitted everywhere.
help to increase brake pressure.
increase fuel efficiency.
2. To know if your vehicle is equipped with ABS, look for:
the ABS shipping paper.
the ABS logo on the steering wheel.
a yellow ABS malfunction lamps on the instrument panel.
an ABS placard.
3. You should do an after-trip inspection:
after each trip.
once a month.
after each stop.
at least once a week.
4. If the vehicle ahead of you is smaller than yours:
it will usually take longer to stop.
it can probably stop faster than you can.
it will take the same amount of time to stop.
All of the above.
5. You should never load a cargo tank totally full. Why?
To save money on the tank rental fee.
All of the above.
Liquids shrink when they freeze, which results in the so called "outage".
Liquids expand as they warm and you must leave room for the liquid to expand.
6. If you are stopped on an incline, how can you start moving without rolling back?
Shift to neutral
Fully engage the clutch
Apply the parking brake
Aggressively pump the accelerator
7. To warn drivers behind you when you see you'll need to slow down, you should:
flash the brake lights.
sound your horn.
turn off your lights.
use your headlights.
8. If your trucks has a high center of gravity, which of the following is true for curves?
You should slow down, as your truck can roll over at the posted speed limit for the curve.
Reduce your speed to a crawl.
You should travel at the posted speed limit.
None of the above.
9. When conducting a pre-trip inspection:
you should review the last vehicle inspection report.
the inspection report should only be reviewed if you will be carrying passengers.
the vehicle inspection report should not be reviewed unless your supervisor tells you to do so.
None of the above.
10. When you double your speed, the braking distance is:
4 times longer.
the same.
2 times longer.
3 times longer.
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Tanker Test - OR CDL

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