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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 Iowa CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The IA tanker test covers the following sections of the Iowa CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this IA tanker practice test now to prepare for the actual test!
1. Hauling liquids in tanks requires special skills because of:
the high center of gravity.
liquid movement.
All of the above.
2. Forward-and-back liquid surge is very strong in:
dry tanks.
baffled tanks.
unbaffled tanks.
3. When backing a truck you should:
look straight ahead.
always rely on your mirrors.
get out and walk around the vehicle before you begin to back.
4. Another name for front-end header boards is:
head belt.
containerized racks.
headache racks.
5. If you discover a cargo leak, you should call for help and:
use shipping papers to identify the leaking material.
try to identify the material by smell.
touch the leaking HazMat to identify the material.
6. When checking the engine compartment in a vehicle inspection, you should check all of the following except:
Engine oil level
Shock absorbers
Windshield washer fluid level
7. You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
Keep moving at the present speed and steer very gently back onto the pavement.
Brake hard to slow the vehicle, then steer sharply onto the pavement.
If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
8. If you must drive slowly, how should you alert following drivers?
Turn on your taillights
Use your emergency flashers if it is legal
Flash your brake lights
9. You are inspecting your vehicle during a trip. What should you do?
Check critical items such as tires, brakes, and lights.
Use your senses to check for problems.
All of the above.
10. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
identified by an "H" placed before the shipping description.
entered first.
written in a larger font.
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IA Tanker Test

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