Iowa CDL Practice Test: Tank and Hazmat - Test 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 DMV locations.
1. A tank trailer with baffles helps to control ________.
A
The weight of the vehicle.
B
Liquid movement from side to side.
C
None of the listed answers.
D
Liquid movement from front to back.