Knowledge Test Class B #1
Class B Driving Test | Idaho 2026 #1 Page 5 of 7
Train for FREE online with our Idaho 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 ID CDL class B 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 B requirements may vary from state to state.
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29 . Air tank drains should:
In an air brake system, air tank drains are used to remove water and compressor oil from the air tanks. When operating a drain, be sure to drain the tank completely.
30 . For a basic vehicle control skills test, you are expected to be able to:
Maneuvers that may be included in the basic vehicle control skills test include straight line backing, offset back/right parking, offset back/left parking, driver side parallel parking, conventional parallel parking, and alley docking.
31 . As part of the vehicle inspection test, you will be asked to:
During the vehicle inspection test, you will be required to do a complete inspection of your vehicle. During this inspection, you must explain to the examiner what you are inspecting and why you are inspecting those items.
32 . A low air pressure warning signal should activate:
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
33 . When inspecting your tires, you do not want to find:
There should be at least 4/32 of an inch of tread depth in every major groove on front tires and 2/32 of an inch on other tires. Valve stems should not be cut or cracked. Tire sizes should not be mismatched.
34 . What does the air compressor governor do?
In an air brake system, the air compressor governor controls when the air compressor pumps air into the storage tanks. It stops pumping if the pressure in the tanks becomes too high, and begins pumping if the pressure becomes too low.
35 . Texting while operating a CMV is:
Texting and driving is dangerous for everyone on the road. It is illegal to text while operating a CMV.
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2026 Idaho | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Idaho, you must first possess a valid Idaho Commercial Driver's License (CDL). After that, you will need to pass the Hazardous Materials Endorsement Knowledge Test. Lastly, you should complete a federal security threat assessment application, provide fingerprints, and pass an FBI background check. The endorsement will be added to your CDL once approved.
To obtain a CDL Hazmat license, you must first have a valid Commercial Driver's License (CDL). You must be at least 21 years old and be able to read and speak English. You also need to pass a physical examination every two years. Lastly, you must pass the Hazardous Materials Endorsement Knowledge Test and an FBI background check.
When applying for a CDL Hazmat endorsement, you need to provide proof of U.S. citizenship or legal status, such as a birth certificate or passport. You also need your current Commercial Driver's License (CDL), proof of Idaho residency, and your Social Security Number. Finally, you'll need to complete a federal security threat assessment application and provide fingerprints for an FBI background check.
Yes, there is a dedicated written test for the CDL Hazmat endorsement in Idaho. This test assesses your knowledge on transporting hazardous materials safely. It covers topics such as loading and unloading, bulk packaging marking, driving and parking rules, and emergency response procedures. The Idaho Commercial Driver’s License Manual is a great resource to prepare for this test.
The written test for the CDL Hazmat endorsement covers a wide range of topics related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, placarding rules, loading and unloading procedures, handling emergencies and incidents, and understanding the associated risks and safety precautions when transporting hazardous materials.
Yes, obtaining a CDL Hazmat endorsement in Idaho involves extra charges. You'll need to pay a fee for the knowledge test, and there's also a fee for the endorsement itself. Additionally, the TSA background check carries a separate fee. The exact costs can vary, so it's recommended to check the current fees with your local DMV office or on their website.
Yes, to obtain a Hazmat endorsement in Idaho, the Transportation Security Administration (TSA) requires a federal background check and fingerprinting. This is to ensure the driver doesn't pose a security threat. The applicant must be a U.S. citizen or have legal status, and must not have committed certain crimes.
Yes, specialized training is required for a CDL Hazmat endorsement. Applicants must pass a written test on federal and state regulations for transporting hazardous materials. While it's not mandatory, many opt for professional training programs to prepare. After passing the test, a TSA background check is also required before the endorsement is granted.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Idaho. The endorsement ensures that drivers are trained and equipped to handle hazardous materials safely. Violating this requirement can lead to severe penalties, including fines and suspension or revocation of your commercial driver's license.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. It doesn't require a new application for a CDL, but it does require passing a written test specific to Hazmat transportation, as well as a TSA background check. Once these are successfully completed, the Hazmat endorsement can be added to your existing CDL.
