Iowa CDL Practice Test: Tank and Hazmat - Test 2 2023
Based on 2023 IA CDL Handbook
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 DOT locations.
1. Why does hauling liquids in tanks require special skills?
Liquid is significantly heavier than solids.
Tanks that carry liquids have more controls.
Low center of gravity.
High center of gravity and liquid's movement.
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