A properly adjusted mirror will show some portion of the vehicle. This will provide a point of reference to help the driver judge the distance of other objects to the vehicle.

A part of the vehicle should be visible in the mirrors.

No part of the vehicle should be visible in the mirrors.

A part of the vehicle should be visible in the mirrors.

More than half of each mirror should show the vehicle.

When doing a pre-trip inspection on a vehicle with power steering, be sure to check the hoses, pumps, and fluid level. In particular, you should check the hoses for leaks.

Secure connections to the battery.

Extra hose pieces available for repairs.

You must always properly signal before turning or changing lanes.

Should only be used if there is traffic present.

Should only be used between dusk and dawn.

Class B Driving Test | Iowa 2025 #2

Train for FREE online with our Iowa class B license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IA CDL class B permit in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class B requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

Class B Driving Test | Iowa 2025 #2

1 . Operating a CMV with any measurable amount of alcohol in your system will result in an out-of-service order for:

2 . When mirrors are properly adjusted:

3 . When checking power steering hoses during a pre-trip inspection, you should look for:

4 . When transporting a load, you should inspect the cargo:

5 . Interstate carriers must have what information affixed to the commercial motor vehicles in their fleet?

6 . Which of the following is not a cause of hydraulic brake failure?

7 . When making a lane change, your turn signal:

See the exact questions that will be on the 2025 DMV exam.

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