20 Tests

CDL Class A Driving Test Online | Iowa 2020

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 2020, practice as much as.. Read More

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 2020, 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.

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

When inspecting your brakes, you should check for cracked drums; shoes or pads covered in oil, grease, or brake fluid; and shoes that are missing, broken, or worn dangerously thin.

2 . Hydroplaning:

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.

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

Most cases of hydraulic brake failure come from one of two causes. The brakes may fail due to a loss of hydraulic pressure or due to overuse on long hills, causing the brakes to fade.

4 . When stopping, you should:

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

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

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.

6 . When using a mirror, you should:

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.

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

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

Wait, before you go

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