Air Brakes #2
Air Brakes Endorsement Test | New Hampshire 2025 #2 Page 4 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.
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19 . What is removed when an air tank is drained?
In an air brake system, air tanks have drains to remove accumulations of water and compressor oil. Allowing water and oil to accumulate in the system could cause damage to the brakes.
20 . Service brakes should:
Before driving, you should always verify that your service brakes are in good working order. Testing the brakes before a trip allows you to locate any problems before you need to brake while on the road.
21 . If the spring brakes are on, you should:
Do not use the brake pedal when the spring brakes are on. This could damage the brakes by subjecting them to the combined forces of springs and air pressure.
22 . During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
One tenth
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
23 . To use the controlled braking method, you should:
Pump the brakes.
The method of controlled braking involves applying the brakes as hard as you can without locking the wheels. If you need to make large steering adjustments while using controlled braking, you should remove your foot from the brake pedal, steer, then reapply the brakes.
24 . Why do large vehicles use air brakes?
If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.
25 . 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 55 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
See the exact questions that will be on the 2025 New Hampshire DMV exam.
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Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
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2025 New Hampshire | Frequently Asked Questions
A CDL Class B license in New Hampshire is designed for operators of commercial vehicles with a GVWR of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds. This class includes straight trucks, large buses, segmented buses, box trucks, dump trucks with small trailers, and trucks towing small trailers.
A Class B CDL license in New Hampshire allows you to operate commercial vehicles such as straight trucks, large buses, segmented buses, box trucks, and dump trucks with small trailers. You can also operate a vehicle towing another vehicle not exceeding 10,000 pounds. However, it does not permit operation of combination vehicles (Class A).
In New Hampshire, to acquire a Class B CDL, you must be at least 18 years old (21 for interstate driving), possess a valid New Hampshire driver's license, and pass a vision test. You also need to pass a general knowledge test and a skills test, which includes a pre-trip vehicle inspection, a basic controls test, and an on-road driving exam.
To qualify for a Class B CDL license in New Hampshire, you must be at least 18 years old. However, if you intend to drive commercial vehicles across state lines (interstate driving), or carry hazardous materials, you must be at least 21 years old. Always ensure to check the latest regulations.
While a Class B CDL license in New Hampshire allows you to operate certain types of commercial vehicles, specific endorsements may be required to drive particular vehicles or carry specific cargo. For instance, you'll need a Passenger (P) endorsement for buses, School Bus (S) endorsement for school buses, and a Hazardous Materials (H) endorsement for transporting hazardous materials.
The Class B CDL skills assessment in New Hampshire includes three parts: the pre-trip inspection, basic vehicle control, and on-road driving. Candidates must demonstrate knowledge of vehicle inspections, show ability to control the vehicle by backing and maneuvering in a confined space, and display safe driving practices on public roads.
Yes, Class B CDL license holders in New Hampshire are limited to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds GVWR. They can't drive a vehicle that falls under Class A (like tractor-trailers) unless they have the appropriate endorsement or upgrade to a Class A CDL.
In New Hampshire, the written Class B CDL test is primarily offered in English. However, some testing centers may provide assistance or translations in other languages. It's recommended to contact the testing center directly to inquire about language accommodations. Federal regulations require all CDL holders to have a basic understanding of English for safety reasons.
Yes, you can request accommodations for the Class B CDL written exam in New Hampshire if you have a disability. The Division of Motor Vehicles (DMV) complies with the Americans with Disabilities Act (ADA) to provide reasonable accommodations. Contact your local DMV office in advance to discuss your needs and arrange suitable accommodations for your test.
Yes, if you don't pass the Class B CDL written test in New Hampshire, you can retake it. However, you may have to wait a specific period before you can attempt the test again. You might also have to pay a re-examination fee each time you retake the test. It's advisable to study thoroughly before reattempting.
