Tank Endorsement Test | Iowa 2025 #2

Train for FREE with our Iowa tank endorsement practice test online. 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 tank license 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 DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . Off-ramps:

Are usually safest for trucks.

Can be dangerous for trucks.

Should not be used by trucks.

On- and off-ramps can be dangerous when driving a truck. Remember that posted speed limits for ramps may be safe for cars but too fast for trucks.

2 . If your vehicle is hydroplaning, you should:

Accelerate.

Not use the brakes.

Put the vehicle in reverse.

If your vehicle begins to hydroplane, do not apply the brakes. Instead, slow down by releasing the accelerator and pushing in the clutch. This will help you to regain traction.

3 . After starting the engine, the Anti-Lock Braking System (ABS) light stays on if:

The ABS is working properly.

The ABS is not working properly.

The ABS is not engaged.

The Anti-Lock Braking System (ABS) indicator light should come on after an engine is started. The light will then turn off. If the light remains on, the ABS it not working properly.

4 . A lane change:

Should be done quickly.

Should be done slowly.

Should be done with a jerking motion.

Lane changes should be made slowly and smoothly.

5 . Which of the following is not an example of a distracted person who should concern motorists?

A driver talking to a passenger in their vehicle

A person sitting on a bench waiting for a bus

A construction worker on the side of the road

You should be cautious when you are near people who are not paying attention to the road. Drivers and pedestrians who are talking to someone may be distracted by the conversation and not fully paying attention to the road. Workers on or near the road may not be paying attention to traffic because they are focused on their work, and can themselves also be a distraction to drivers.

6 . What does a vehicle inspection report do?

Tells the motor carrier about problems that may need fixing

Ensures that the vehicle is inspected regularly

Holds drivers accountable for inspecting the vehicle

Drivers may be required to submit a written vehicle inspection report at the end of each day of driving. The motor carrier must repair any items in the report that affect safety and certify on the report that repairs were either made or unnecessary.

7 . If driving so slowly that you could impede other drivers, you should:

Stay in the left lane.

Drive while using your four-way flashers.

Wave an arm out the window.

If you must drive so slowly that you will impede the flow of traffic, you should turn on your four-way flashers to alert drivers behind you (as long as local laws allow the use of flashers).

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2025 Iowa | Frequently Asked Questions

A CDL Class B license in Iowa is designated for drivers operating vehicles with a Gross Vehicle Weight Rating (GVWR) exceeding 26,000 pounds, or towing vehicles not exceeding 10,000 pounds. This includes buses, dump trucks, straight trucks, and other large freight trucks. Drivers must pass knowledge and skills tests to obtain this license. Age and health requirements also apply.

A Class B CDL license in Iowa allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. This includes large passenger buses, segmented buses, straight trucks, dump trucks, delivery trucks, and utility trucks.

To acquire a Class B CDL license in Iowa, applicants must be at least 18 years old (21 for interstate driving), possess a valid non-commercial driver's license, and pass a vision test. They must also pass a general knowledge test and a skills test, which includes a pre-trip vehicle inspection, a basic controls test, and a driving test. Medical examinations are also required.

To qualify for a Class B Commercial Driver's License (CDL) in Iowa, you must be at least 18 years old. However, you must be 21 years or older if you plan to drive across state lines, carry hazardous materials, or drive a vehicle designed to transport 16 or more passengers, including the driver.

Specific endorsements aren't necessary for a Class B CDL license, but they can enhance your license. Endorsements allow you to drive certain types of vehicles, like school buses, tank vehicles, or vehicles carrying hazardous materials. To get an endorsement, you'll need to pass additional written and skills tests.

The Class B CDL skills assessment in Iowa includes a pre-trip vehicle inspection, where you demonstrate knowledge about your vehicle and its safety. It also includes a basic controls test, where you show your ability to control the vehicle. Lastly, it encompasses a driving test, where you demonstrate safe driving practices on public roads.

Yes, Class B CDL license holders in Iowa are limited to operating vehicles under 26,001 pounds or towing vehicles not exceeding 10,000 pounds. They can drive buses, farm labor vehicles, and any fire-fighting or emergency vehicles. However, they cannot operate Class A vehicles without the proper endorsements. Interstate driving is not allowed until the age of 21.

Yes, in Iowa, the written Class B CDL test can be taken in Spanish. However, the Federal Motor Carrier Safety Administration requires all commercial drivers to read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.

Yes, accommodations can be made for individuals with disabilities taking the Class B CDL written exam in Iowa. You need to request these accommodations in advance when scheduling your exam. Accommodations may include extended time, a separate testing room, or use of assistive technology. Always check with your local DMV office for specific procedures and requirements.

Yes, if you don't pass the Class B CDL written test in Iowa, you can retake it. However, you must wait at least one day before retaking the test. There may be additional fees for each retest. If you fail the test several times, you might be required to wait a longer period before your next attempt.