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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 Illinois CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The IL tanker test covers the following sections of the Illinois CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this IL tanker practice test now to prepare for the actual test!
1. A high center of gravity:
requires special transit permits.
makes the vehicle less likely to roll over.
improves fuel efficiency.
makes the vehicle easy to roll over.
2. When driving a 60-foot truck at 50 mph, your minimum following distance should be:
3 seconds
5 seconds
6 seconds
7 seconds
3. The steering wheel should:
be held firmly with the right hand.
be held with one hand at a time.
be held firmly with both hands.
be held firmly with the left hand.
4. If a trailer does not have spring brakes, to keep the trailer from moving you should:
park on a slight decline.
use wheel chocks.
close the brake valve.
use the service brakes.
5. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:
prevent movement of cargo.
hold compressed air.
reduce the chance of the front wheels skidding.
keep from rolling back.
6. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
7. Skids caused by acceleration can usually be stopped by:
swerving to the left.
swerving to the right.
taking your foot off the accelerator.
applying the brakes firmly.
8. When checking the engine compartment in a vehicle inspection, you should check all of the following except:
Spring hangers
Windshield washer fluid level
Coolant level in radiator
Engine oil level
9. If the drive wheels begin to spin when accelerating, you should:
set the parking brake.
brake gently.
take your foot off the accelerator.
continue to accelerate.
10. Brake fade:
results from excessive heat caused by using brakes too much.
is not affected by brake adjustment.
relies on the engine braking effect.
All of the above.
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IL CDL Tanker Test

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