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Iowa CDL Practice Test: Tank and Hazmat - Test 2023

Number of questions: 30
Passing score: 80%
Acceptable number of errors: 6

Instruction: To obtain this endorsement for hauling hazardous materials in a tank or tanks, applicants must pass a 30-question test. And to pass the test, applicants must score at least 80%. Test questions are from the IA CDL Handbook. If you need additional information, please contact your local DMV office. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Iowa DMV locations.

1. A tank trailer with baffles helps to control ________.
A
Liquid movement from side to side.
B
Liquid movement from front to back.
C
The weight of the vehicle.
D
None of the listed answers.
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