Tank Endorsement Test | Iowa 2025 #1

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 . When it is difficult to see other vehicles, such as at dawn or dusk, you should:

Keep your lights off.

Turn your lights on.

Drive on the shoulder.

When driving at dawn, at dusk, or in inclement weather, you should use your headlights on their low beam setting to increase your visibility.

2 . If the letter “G” appears in Column 1 of a hazardous materials shipping paper, the shipping paper must also include:

The technical name of the hazardous materials.

The type of packaging containing the hazardous materials.

The shipper’s phone number.

A "G" in Column 1 of a hazardous materials shipping paper indicates that the description in Column 2 is the generic name for a material. A generic shipping name must be accompanied by a technical name.

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

Place emergency warning devices.

Alert local law enforcement.

Call a mechanic.

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

4 . Shipping papers should be:

Hidden from view.

Placed in the glove box.

Easily seen by anyone entering the cab.

When transporting hazardous materials, shipping papers should be kept in a pouch in the driver's side door, or in another location where the driver is able to easily reach them while their seat belt is fastened. The papers must be easily visible to anyone who is entering the cab.

5 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven

Seven to eight

Eight to nine

Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.

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

Cracked drums

Very thin pads

Pads free of oil or grease

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.

7 . 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.

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2025 Iowa | Frequently Asked Questions

To acquire a CDL Hazmat endorsement in Iowa, you need to pass the Hazardous Materials Endorsement Knowledge Test. Additionally, you must undergo a federal background check and fingerprinting. The TSA will assess your application and once approved, the Iowa Department of Transportation will add the endorsement to your CDL.

To obtain a CDL Hazmat license, you must first possess a valid Commercial Driver's License (CDL). You also need to be at least 21 years old, a U.S. citizen or have legal status, and be able to read and speak English. Additionally, you must pass the Hazardous Materials Endorsement Knowledge Test and undergo a federal background check and fingerprinting.

When applying for a CDL Hazmat endorsement in Iowa, you'll need to provide proof of U.S. citizenship or permanent residency, proof of identity, and proof of Iowa residency. Additionally, you'll need to bring your current CDL. A TSA background check and fingerprinting are also required, for which separate documentation may be needed.

Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is called the Hazardous Materials Endorsement Knowledge Test. It covers topics such as loading and unloading hazardous materials, bulk packaging marking, driving and parking rules, and emergency response procedures.

The written test for the CDL Hazmat endorsement in Iowa covers a wide range of subjects. These include understanding hazardous materials regulations, safety procedures, proper use of shipping papers, placarding, loading/unloading, bulk packaging marking, compatibility and segregation of cargo, and emergency response procedures.

Yes, there are additional fees associated with obtaining a CDL Hazmat endorsement in Iowa. These include a fee for the knowledge test, a fee for fingerprinting, and a fee for the TSA background check. The specific amounts can vary, so it's best to check with the Iowa Department of Transportation for the most current costs.

Yes, obtaining a CDL Hazmat endorsement in Iowa requires a background check. The Transportation Security Administration (TSA) conducts this check, which includes a review of your criminal, immigration, and FBI records. This ensures that you do not pose a security threat while transporting hazardous materials.

Yes, specialized training is required for the CDL Hazmat endorsement in Iowa. This involves understanding hazardous materials regulations, emergency response procedures, and safety protocols. After training, you must pass a written test to get certified. This ensures that drivers are equipped with necessary knowledge to handle hazardous materials safely.

No, you cannot legally transport hazardous materials in Iowa without a valid CDL Hazmat endorsement. This endorsement is required by federal law and ensures that drivers have the necessary knowledge and skills to safely transport hazardous materials. Violating this requirement can result in severe penalties, including fines and suspension of your CDL.

You can add a Hazmat endorsement to your current CDL in Iowa. You don't need to apply for a new CDL. However, you must pass a written test on hazardous materials and complete a TSA security threat assessment, which includes fingerprinting and a background check, to obtain the endorsement.