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Iowa CDL Practice Test: HazMat - Test 2020

(From the 2020 Iowa CDL Handbook)
Number of tests: 1
Number of questions: 30
Passing score: 80

Directions: To obtain this endorsement for hauIing hazardous materials, applicants must pass a 20-question test. Before taking the test, applicants must pass a Transportation Security Administration background check. And to pass the test, applicants must score at least 80%. Test questions are from the Iowa Commercial Driver Handbook. The Hazardous Materials 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. What is the maximum length of a bus' tail swing?

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