Class A Driving Test | Iowa 2026 #2

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 2026, 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

1 . If turning to avoid a hazard:

You should brake hard.

You should not brake as it may cause the wheels to lock.

You should turn very sharply.

You should not brake while making a quick turn to avoid a hazard. Doing so could cause your wheels to lock and make your vehicle skid out of control.

2 . When approaching a vehicle for a pre-trip inspection, a driver should look under the vehicle:

To see if the vehicle is on an incline.

To see if there are any fresh fluids on the ground.

To see if the vehicle is in a parking spot.

When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks of oil, grease, or fuel. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

3 . Anti-Lock Braking Systems (ABS):

Are not used on trucks.

Are only used on tucks carrying hazardous materials.

Allow drivers to stay in control when braking.

An Anti-Lock Braking System (ABS) helps prevent wheels from locking up during a hard application of brakes.

4 . If a driver has stopped on the road and is placing triangles to warn other motorists:

The triangles should be held between the driver and oncoming traffic.

The triangles should be carried behind the driver's back to prevent them from being seen by other drivers until they are placed.

The triangles should be held as low as possible.

For your own safety, when placing reflective warning triangles, you should carry them between your body and the oncoming traffic.

5 . Distracted driving can be avoided by:

Pre-programming radio stations.

Smoking while driving.

Eating while driving.

Distractions while driving can be physical (such as reaching for an object), mental (such as making conversation with a passenger), or both (such as holding a phone to send texts). Strategies to help you avoid distracted driving include pre-programming radio stations; planning out your route in advance; avoiding complex or emotionally taxing conversation while driving; adjusting your mirrors before setting out; and not eating, drinking, or smoking while behind the wheel.

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

Loss of hydraulic pressure

Brake fade on long hills

Downshifting

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.

7 . If a vehicle is carrying hazardous cargo, placards must be placed:

Only on the front of the vehicle.

On the front, rear, and sides of the vehicle.

Only on the driver’s side of the vehicle.

Placards must be placed on the front, the rear, and both sides of a vehicle carrying hazardous cargo. They must be readable from any direction.

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2026 Iowa | Frequently Asked Questions

To secure a CDL Bus endorsement in Iowa, you must first hold a valid Commercial Driver's License (CDL). You then need to pass the Passenger Transport Test, undergo a physical examination, and complete a skills test in the type of vehicle you'll be driving. Finally, you must pass a background check as mandated by Federal Motor Carrier Safety Administration.

To obtain a CDL Bus license, you must first have a valid driver's license. Then, pass the CDL general knowledge test, and the passenger transport test. You must also pass a physical examination and a skills test in the type of bus you will be driving. Finally, submit to a background check as required by the Federal Motor Carrier Safety Administration.

Yes, specific training is necessary for a CDL Bus endorsement. You must complete a commercial driver's education course, pass the general knowledge and passenger transport written tests, and successfully complete a skills test in the type of bus you'll be driving. Some states also require applicants to have a certain amount of driving experience.

CDL Bus licenses are classified into three main categories: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 lbs where the vehicle being towed is over 10,000 lbs. Class B is for single vehicles over 26,001 lbs not towing a vehicle over 10,000 lbs. Class C is for vehicles carrying 16 or more passengers including the driver or hazardous materials.

No, you cannot use your personal vehicle for the CDL Bus driving test. The test must be taken in the same type of vehicle for which you are trying to get licensed. This means you will need to take the test in a commercial bus similar to the one you will be driving professionally.

During the CDL Bus driving test, you'll be evaluated on several skills. These include pre-trip vehicle inspection, basic vehicle control (backing, turning, stopping), and on-road driving (including highway, city, and residential driving). You'll also be tested on specific bus maneuvers such as loading and unloading passengers, bus stop procedures, and emergency exit procedures.

Yes, there are additional medical prerequisites for a CDL Bus endorsement. You must pass a Department of Transportation (DOT) physical exam every 24 months. The exam assesses hearing, vision, blood pressure, and checks for conditions like diabetes or epilepsy that could affect your ability to safely operate a bus.

No, it's not permissible to transport passengers without a valid CDL Bus endorsement in Iowa. It's a requirement by law for drivers who operate a vehicle designed to carry 16 or more passengers, including the driver. Driving such a vehicle without the proper endorsement could result in serious legal consequences, including fines and suspension of your driving privileges.

Yes, the CDL Bus endorsement can be added to your existing CDL in Iowa. You don't need to apply for a new license, but you must pass the Passenger Transport test. Once you pass, the endorsement will be added to your current CDL. However, you may need to renew your license if it's close to its expiration date.

Yes, drivers with a CDL Bus endorsement must comply with federal and state regulations. These include maintaining a logbook of hours driven, undergoing regular medical examinations, and adhering to restrictions on alcohol consumption. Also, some states may have additional restrictions such as age limits and mandatory rest periods between driving shifts.