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Cheat Sheet

Iowa CDL Permit Test - Tank

(From the 2020 Iowa 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 Iowa Commercial Driver 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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
When starting from a complete stop, a vehicle should:
Jerk forward.
Roll backwards.
Not move backwards.
2.
An Anti-Lock Braking System (ABS):
Is not available for most trucks.
Is not helpful in most situations.
Is required on newer trucks.
3.
If you notice a cargo leak, you should identify the leaking hazardous materials by:
Smelling the materials.
Touching the materials.
Using the shipping papers.
4.
If a vehicle is accompanied by a vehicle inspection report:
The driver should first inspect the vehicle, then compare their notes with the report.
The driver should first look at the report when completing an inspection.
The driver should not conduct a pre-trip inspection and should rely only on the report.
5.
When driving under wet conditions, a lack of spray coming from the tires of other vehicles indicates that:
Ice has formed on the road.
The pavement is dry.
The spray is caught on the underside of the vehicle.
6.
Pushing in the trailer air supply control will:
Supply the trailer with air.
Deactivate the air brakes.
Prevent the vehicle from skidding.
7.
Carrying liquids in a leaking tank:
Can be done if no one is following you.
Is illegal.
Is not dangerous as long as there are no sparks.
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