Knowledge Test Class B #1
Class B Driving Test | Iowa 2025 #1 Page 5 of 7
Train for FREE online with our Iowa class B 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 B 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 B requirements may vary from state to state.
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29 . When completing a conventional parallel parking maneuver, you should:
You may be asked to complete a conventional parallel parking maneuver into a parking space that is to the right of your vehicle. You should drive past the parking space before backing into it while bringing the rear of your vehicle as close to the rear of the space as possible. Your vehicle should be completely within the boundaries of the space.
30 . Rough acceleration:
Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.
31 . When driving at night, you should do all of the following, except:
To ensure that you can see as well as possible, don't wear sunglasses when driving at night. If you wear eyeglasses, make sure they are clean and unscratched. Make sure you are rested and alert before driving at night.
32 . You may:
A person cannot have more than one driver license at a time. States share information through a computer database to ensure that no person has more than one license. Violation of this law could result in fines or jail time.
33 . When driving in hot weather:
Because air pressure increases as air expands in the heat, it is important to monitor your tire pressure when driving in very hot weather. To prevent the engine from overheating, there must be an adequate amount of oil in the engine, as well as enough water and antifreeze in the cooling system. Antifreeze is helpful for the engine in both hot and cold weather.
34 . When a vehicle is started, the coolant temperature should:
After an engine is started, the coolant temperature should rise gradually to a normal operating range.
35 . The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver:
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
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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.
