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Iowa CDL Practice Test: All - Test 3 2020

(From the 2020 Iowa CDL Handbook)
Number of tests: 37
Number of questions: 30
Passing score: 80

Directions: If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Iowa DMV locations.

1. Vehicles with ABS have malfunction lamps that are what color?

2. In good weather, the posted speed for curves is safe for cars, but it may be _______ for many buses.

3. Why should you not drive your vehicle if the air pressure does not build up quickly enough?

4. What might you not be able to do if your vehicle is hydroplaning?

5. A serious traffic violation is which of the following?

6. Another name for off tracking is _______.

7. What should you NOT do when the trailer has begun to skid?

8. What are glad hands?

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4.4 OUT OF 5.0