Air Brakes #1
Air Brakes Endorsement Test | New Hampshire 2025 #1
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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1 . 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.
2 . Using the brakes creates heat. If too much heat is produced:
Brakes are designed to take a lot of heat, but drivers should not rely solely on the brakes to slow their vehicle. Brakes may fade and lose their ability to slow down the vehicle if they become too hot, so drivers should also rely on the engine braking effect.
3 . When traveling down a steep downgrade:
On long and/or steep downgrades, you should primarily use engine braking to control the speed of your vehicle. Use your brakes only as a supplement to this effect.
4 . 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.
5 . 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.
6 . 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.
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
To obtain a CDL Tank endorsement in New Hampshire, you must first have a valid Commercial Driver's License (CDL). Next, study the relevant section in the NH CDL manual, then schedule and pass the tank vehicle endorsement knowledge test at a DMV office. A fee will be charged for taking the test and adding the endorsement to your CDL.
To obtain a CDL Tank license in New Hampshire, you must first have a Commercial Driver's License (CDL). Then, you need to pass the Tank Vehicle endorsement test. This test covers knowledge on inspecting tank vehicles, driving tank vehicles, and safe driving rules. You must also be at least 21 years old for interstate driving.
While New Hampshire does not mandate specific training for a CDL Tank endorsement, having practical experience can be beneficial. However, it's crucial to study the Tank Vehicles section of the NH CDL manual. This will prepare you for the tank vehicle endorsement knowledge test, which you must pass to obtain the endorsement.
Yes, to get a CDL Tank endorsement in New Hampshire, you must pass the tank vehicle endorsement knowledge test. This is an additional written exam focused on the specific knowledge and skills needed for driving tank vehicles. It covers topics like inspecting tank vehicles, driving tank vehicles, and safe driving rules.
The written test for the CDL Tank endorsement in New Hampshire covers various subjects related to tank vehicles. It includes understanding bulk tanks, inspecting tank vehicles, safe driving rules, handling high center of gravity, managing surge, and emergency procedures. The aim is to ensure you're knowledgeable and competent in driving tank vehicles safely.
The CDL Tank endorsement written test in New Hampshire focuses on knowledge rather than specific maneuvers. It evaluates your understanding of inspecting tank vehicles, driving tank vehicles, and recognizing high center of gravity and its effects. It also tests knowledge about bulkheads, baffles, surge, and how to handle leaks or spills.
Yes, drivers with a CDL Tank endorsement must adhere to specific rules and regulations. For instance, they must follow the hazardous materials regulations if their tank contains such substances. Also, they are required to take adequate breaks to avoid fatigue. Overloading the tank beyond its capacity is also prohibited. Violating these rules can lead to penalties or revocation of the endorsement.
No, a valid Commercial Driver's License (CDL) with a Tank Vehicle endorsement (N) is required to transport liquid or gas materials in a tank vehicle in New Hampshire. This applies to tank vehicles designed to carry liquids or gases with an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more. Violating this rule can lead to legal penalties.
Yes, the CDL Tank endorsement can be added to your current commercial driver's license. It doesn't require a fresh application for a new license. However, you will need to pass the Tank Vehicle Endorsement Knowledge Test and pay the necessary fees. Remember, you must have a valid CDL to add any endorsements in New Hampshire.
Yes, handling hazardous materials with a CDL Tank endorsement in New Hampshire requires additional certification. You must obtain a Hazardous Materials (HazMat) endorsement. This involves passing a knowledge test, a TSA background check, and a fingerprinting process. It ensures you understand the safety procedures and protocols for handling hazardous materials.
