Iowa CDL Practice Test: HazMat - Test 2023
Based on 2023 IA CDL Handbook
Instruction: To obtain this endorsement for hauling 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 IA CDL 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 DOT locations.
1. What is the maximum length of a bus' tail swing?
Minimum legal speed is 50 mph in all weather conditions.
Minimum legal speed is 50 mph in ideal conditions.
Maximum legal speed is 50 mph in ideal conditions.
Maximum legal speed is 50 mph in all weather conditions.