Hydroplaning is an effect in which a vehicle's tires lose traction with the surface of the road and instead glide along a layer of water. There does not have to be a large amount of water on the road for this to occur. Hydroplaning can begin at speeds as low as 30 mph.

Can occur with a minimal amount of water on the roadway.

Usually happens when vehicles are traveling at speeds above 65 mph.

Can occur with a minimal amount of water on the roadway.

When stopping, press down the brake pedal smoothly and gradually.

Press down the brake pedal gradually.

Press down the brake pedal quickly.

Press down the brake pedal gradually.

Lift up the brake pedal quickly.

If you must drive onto the shoulder to avoid a hazard, stay on it until you come to a stop; then signal, check your mirrors, and merge back into traffic. Avoid braking on the shoulder at speeds higher than about 20 mph. To help maintain control, always keep one set of wheels on the pavement, if possible.

Stay on the shoulder until your vehicle has stopped, if possible.

Get both sets of wheels onto the shoulder.

Stay on the shoulder until your vehicle has stopped, if possible.

When making mirror checks, you should look at the mirrors fairly quickly. If you spend too much time looking in a mirror, you may travel a substantial distance down the road without seeing what is coming up ahead.

Stare at the mirror for a long time.

Use only the driver’s side mirror.

If you must stop on the side of the road, you must place the appropriate emergency warning devices within 10 minutes of stopping.

Place emergency warning devices.

Class A Driving Test | Iowa 2025 #1

Train for FREE online with our Iowa class A 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 A 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 A requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

Class A Driving Test | Iowa 2025 #1

1 . Which of the following is not a sign of bad brakes?

2 . Hydroplaning:

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

4 . When stopping, you should:

5 . If you must leave the roadway and drive on the shoulder in an emergency situation, you should:

6 . When using a mirror, you should:

7 . Within 10 minutes of stopping on the side of the road, you must:

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