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Should not be used on any vehicle.
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Should not be used on the front of a bus.
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Should not be used on trucks hauling gravel.
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Idaho CDL Permit Test - Tank
(From the 2020 Idaho CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having a capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or chassis. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. Each question has three possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Idaho Commercial Driver’s License Manual. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials and Combination Vehicles. The Tank endorsement can be used with the Class A, B or C CDL.
Passing grade —
4 or fewer errors
advertising
1.
Regrooved tires:
2.
You may leave a vehicle that is carrying explosives unattended:
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Under a bridge.
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In a safe haven.
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On the shoulder of a highway.
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3.
Roads are especially slippery right after it begins to rain because:
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The water mixes with oil and grease on the road.
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Tires are not made to drive in wet weather.
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The water yet hasn't absorbed the dirt and grease.
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4.
When you are pulling a trailer, the air supply control lever should be in its ____ position.
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Emergency
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Supply
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Normal
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5.
When backing up while coupling a trailer, the tractor should be positioned:
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Directly in front of the trailer.
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Directly next to the trailer.
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Parallel with the trailer.
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6.
To transport hazardous materials, what does a driver need?
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A CDL only
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A CDL with a hazardous materials endorsement
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A CDL with a tank endorsement
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7.
If you remain in neutral for too long while switching gears:
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The vehicle will speed up.
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You may have trouble putting the vehicle into the next gear.
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You may kill the engine.
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