Iowa CDL Practice Test: All - Test 3 2026
Based on
2026 IA CDL Handbook
Instruction: To obtain this endorsement required to drive a commercial vehicle, 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. A serious traffic violation is which of the following?
A
Reckless driving.
B
Following a vehicle too closely.
C
Excessive speeding (15 mph or more above the posted limit).
D
Erratic lane changes.
E
All of the listed answers.