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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 Missouri CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The MO tanker test covers the following sections of the Missouri CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this MO tanker practice test now to prepare for the actual test!
1. The heavier the vehicle:
the higher the center of gravity will be.
the more work the brakes must do to stop it.
the less work the brakes must do to stop it.
2. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
in the same color as the non-hazardous materials.
highlighted in a contrasting color.
listed at the bottom.
3. Baffled liquid tanks:
have bulkheads with holes that let the liquid flow through.
have nothing inside to slow down the flow of the liquid.
have bulkheads in them to allow the liquid to move freely.
4. How can drivers help control surge?
By decreasing following distance.
By releasing the brakes soon when coming to a stop.
By braking far in advance of a stop.
5. Unbaffled liquid tankers have nothing inside to slow down the flow of the liquid. Therefore:
side-to-side surge is very strong.
top-to-bottom surge is very strong.
forward-and-back surge is very strong.
6. When going down a steep downgrade, you should primarily brake using:
the parking brake.
the braking effect of the engine.
the service brakes.
7. If your vehicle is hydroplaning, you should:
stay off the brake.
put the vehicle in reverse.
speed up.
8. To keep your vehicle from rolling back when you start, you should:
partly engage the clutch before you take your foot off the brake.
apply the emergency brake whenever necessary.
turn the engine off before you take your foot off the brake.
9. ______ are _____ that have holes in them to let the liquid flow through.
Barriers; baffles
Baffles; bulkheads
Bulkheads; tankers
10. 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.
brake lightly
speed up slightly
downshift to the right gear
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MO CDL Tanker Endorsement

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