Iowa CDL Practice Test: Bus - Test 3 2024
Based on
2024 IA CDL Handbook
Instruction: To obtain this endorsement for driving a school bus, applicants must pass a 20-question test. And to pass the test, applicants must score at least 80%. Test questions are from the IA CDL Handbook. The School Bus 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.
2. If your fifth wheel plate is not well lubricated, this could cause ___________.
A
Less air to reach the emergency line.
B
None of the listed answers.
C
Nothing.
D
Steering problems.