Knowledge Test Class B #1
Class B Driving Test | New Hampshire 2026 #1 Page 3 of 7
Train for FREE online with our New Hampshire 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 NH 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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15 . A broken exhaust system:
Helps the vehicle run better.
A broken exhaust system is extremely hazardous because it can permit poisonous fumes to enter the vehicle's cab or sleeper berth.
16 . When traveling on a downgrade, a vehicle will:
Likely swerve to the right.
On a downgrade, the force of gravity will cause a vehicle to speed up. Adjust your speed before approaching a hill to reduce overuse of your brakes.
17 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.
18 . If you are convicted of a traffic violation:
If you are convicted of any kind of traffic violation, in any type of vehicle, you must notify your employer within 30 days. You must also inform your motor vehicle licensing agency of the violation within 30 days if the conviction happened in another jurisdiction. This rule does not apply to parking infractions.
19 . 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.
20 . If a driver begins to feel fatigued while driving, they should:
Drive faster to finish the trip more quickly.
If you begin to feel drowsy while driving, the only safe response is to safely leave the road and get some sleep. Using artificial stimulants can be dangerous because they may cause extreme fatigue when they begin to wear off.
21 . When approaching a vehicle for a pre-trip inspection, a driver should look under the vehicle:
To see if the vehicle is on a decline.
When approaching your vehicle to conduct an inspection, you should look underneath it to make sure there are no fresh oil, coolant, grease, or fuel leaks on the ground. Leaks can indicate unsafe defects on a vehicle.
2026 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.