Air Brakes #2
Air Brakes Endorsement Test | Hawaii 2026 #2 Page 4 of 4
Train for FREE online with our Hawaii CDL air brake 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 HI Class A/Class B driver license 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 the requirements for CDL may vary from state to state.
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19 . ____ make up the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
20 . Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.
Vehicles with ABS have yellow malfunction lamps to alert drivers when the braking systems are not working. Be sure you know where the malfunction lamp on your vehicle is before beginning a trip.
21 . Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure levels drop to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
22 . ABS brakes:
The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.
23 . An air compressor governor controls:
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
24 . If the safety relief valve in the air brake system releases air:
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.
25 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.
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2026 Hawaii | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Hawaii, you must first have a valid CDL. Then, pass the Hazmat knowledge test at a local DMV. After passing, submit fingerprints and undergo a TSA background check. Once cleared, you'll receive your Hazmat endorsement. Note that this process varies slightly by county, so check local regulations.
To obtain a CDL Hazmat license, you must have a valid Commercial Driver's License (CDL). You should be at least 21 years old, possess U.S. citizenship or legal permanent resident status. You must also pass the Hazmat Knowledge Test and a Transportation Security Administration (TSA) background check, which includes fingerprinting for security clearance.
When applying for a CDL Hazmat endorsement, you'll need your current CDL, proof of U.S citizenship or lawful permanent residency (like a passport or birth certificate), and a completed application form. After passing the knowledge test, you'll also need to provide fingerprints for the TSA background check. Check with your local DMV for any additional requirements.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. It focuses on specific knowledge related to transporting hazardous materials, including recognition and identification of hazardous materials, requirements for placarding, and understanding the associated emergency response procedures. The test is administered by the local Department of Motor Vehicles.
The written test for the CDL Hazmat endorsement covers several key areas related to transporting hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, using placards and labels, following safe loading and unloading procedures, handling emergencies, and understanding the relevant federal laws and regulations.
Yes, obtaining a CDL Hazmat endorsement involves extra charges. These typically include a fee for the knowledge test, a fingerprinting fee for the TSA background check, and a fee for adding the endorsement to your license. The exact amounts vary by state, so check with your local DMV for specific costs.
Yes, obtaining a CDL Hazmat endorsement requires a Transportation Security Administration (TSA) background check. This includes fingerprinting and a review of your criminal, immigration, and mental health history. The aim is to ensure that hazardous materials are transported by individuals who do not pose a security risk.
Yes, specialized training and certification are mandatory for the CDL Hazmat endorsement. Applicants must pass a written test on handling hazardous materials and a TSA security threat assessment. Furthermore, they need to demonstrate practical skills, like loading and unloading hazardous materials safely, which may require additional training.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in the United States. The endorsement is necessary to ensure that drivers are properly trained and capable of handling hazardous substances. Violating this rule can result in hefty fines and penalties.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new CDL. However, you will need to pass a written Hazmat knowledge test, undergo a TSA background check, and pay the necessary fees. Once these are completed successfully, the Hazmat endorsement will be added to your existing CDL.
