Air Brakes #2
Air Brakes Endorsement Test | New Hampshire 2025 #2 Page 3 of 4
Train for FREE online with our New Hampshire 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 NH Class A/Class B driver 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 the requirements for CDL may vary from state to state.
25
20
20
13 . Some air brake systems use alcohol:
To reduce the risk of rust forming on air brake valves.
Some air brake systems contain an alcohol evaporator. This device introduces alcohol into the braking system to inhibit the formation of ice.
14 . 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.
15 . An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.
450 feet
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.
16 . Pressing and releasing a brake pedal unnecessarily can:
Create a loud noise.
In an air brake system, pressing and releasing the brake pedal unnecessarily can release air from the braking system faster than the compressor can replace it.
17 . Do not use the parking brake when parking if:
There is water on the ground.
A parking brake should not be used if the vehicle's brakes are very hot from use on a steep downgrade or if the brakes are very wet and temperatures are freezing. Using the parking brake when brakes are hot could cause damage to the brakes, and using the brakes when they are wet in freezing weather may cause the brakes to ice up, rendering the vehicle immobile.
18 . When leaving your vehicle unattended:
Always apply the parking brake when leaving your vehicle unattended.
See the exact questions that will be on the 2025 New Hampshire DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2025 New Hampshire | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in New Hampshire, you must have a valid commercial driver's license (CDL). Then, pass the Hazardous Materials Knowledge Test at your local DMV. You'll also need to submit a fingerprint-based background check and complete the TSA security threat assessment. Once these steps are completed, you can receive your Hazmat endorsement.
To obtain a CDL Hazmat license, you first need to have a valid Commercial Driver's License (CDL). You must be at least 21 years old and a U.S. citizen or have legal status. You're required to pass the Hazardous Materials Endorsement Knowledge Test, provide proof of identity, and undergo a TSA background check and fingerprinting.
When applying for a CDL Hazmat endorsement, you'll need to present your current valid Commercial Driver's License (CDL). You'll also need proof of U.S. citizenship or legal status, such as a birth certificate or green card. A completed application form, along with payment for the fees, is also required. Lastly, you'll need to submit your TSA background check and fingerprinting results.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is known as the Hazardous Materials Endorsement Knowledge Test. It covers the special rules and safety procedures for hauling hazardous materials. You must pass this test to obtain your Hazmat endorsement. Preparation may involve studying a state-specific CDL manual or taking practice tests.
The written test for the CDL Hazmat endorsement covers a range of topics related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, using placards and labels, loading and unloading hazardous materials, responding to emergencies and spills, and complying with federal and state regulations.
Yes, acquiring a CDL Hazmat endorsement in New Hampshire does involve extra charges. These include a fee for the written test, the TSA background check, and the endorsement itself. The exact amounts can vary, but you can expect to pay around $100 for the TSA check and $10 for the endorsement.
Yes, background checks are mandatory for the CDL Hazmat endorsement. The Transportation Security Administration (TSA) requires a security threat assessment, which includes fingerprinting and a criminal history check. Applicants must be U.S. citizens or have legal status. They cannot have convictions for certain crimes or pose a threat to national security, transportation security, or infrastructure.
Yes, obtaining a CDL Hazmat endorsement requires specialized training. The training covers topics like handling hazardous materials, safety procedures, and federal regulations. After training, you must pass a written test to get the endorsement. The training can often be completed through the same institution where you get your Commercial Driver’s License.
No, you cannot transport hazardous materials without a valid CDL Hazmat endorsement in New Hampshire or any other state. This endorsement is required by federal law and ensures that drivers are properly trained and capable of safely transporting hazardous materials. Violating this requirement can result in substantial fines and penalties.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. However, it's not a simple addition. You'll need to pass a written test, provide proof of U.S. citizenship or legal status, and successfully complete a TSA background check. Once these steps are completed, the endorsement can be added to your existing CDL license.
