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Iowa CDL Practice Test: Tank - Test 4 2023

Number of questions: 28
Passing score: 80%
Acceptable number of errors: 5

Instruction: To obtain this endorsement for hauling any liquid or gaseous materials in a tank or tanks, applicants must pass a 15-question test. And to pass the test, applicants must score at least 80%. Test questions are from the IA CDL Handbook. The Tanker Vehicles endorsement can be used with the Class A, B, or C CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Iowa DMV locations.

1. A closed tractor protection valve ________.
A
Truss bridges
B
Suspension bridges
C
Rigid bridges
D
Drawbridges
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