Knowledge Test Class B #1
Class B Driving Test | Arizona 2025 #1 Page 7 of 7
Train for FREE online with our Arizona 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 AZ CDL class B permit 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 CDL class B requirements may vary from state to state.
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43 . Which of the following is an indication of standing water on the roadway?
Hydroplaning can occur in places where water collects on the road. Clear reflections, tire splashes, or rain drops on the road can indicate the presence of standing water.
44 . To affect a vehicle, ABS:
Anti-lock brakes on only a single axle still provides a driver with more control while braking than they would have without any anti-lock brakes.
45 . What does an air compressor do in an air brake system?
In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.
46 . The leading factor resulting in death and injury in work zones is:
The leading cause of injury and death in roadway work zones is excessive speed by passing drivers. Lower your speed when driving through a work zone.
47 . Driving at night is usually:
There are several reasons why driving at night is more difficult than driving during the day. It is more difficult for drivers to see hazards, the glare of headlights can affect drivers' vision, and there are more fatigued drivers on the road.
48 . When an engine is running, an acceptable oil pressure would be:
Operating oil pressure should be between 35 and 75 psi. Do not operate a vehicle if it has oil pressure that is low, dropping, or fluctuating.
49 . Which of the following is not an example of a distracted person who should concern motorists?
You should be cautious when you are near people who are not paying attention to the road. Drivers and pedestrians who are talking to someone may be distracted by the conversation and not fully paying attention to the road. Workers on or near the road may not be paying attention to traffic because they are focused on their work, and can themselves also be a distraction to drivers.
50 . To make your vehicle more visible during the day, you should:
Low beam headlights should be used for best visibility, even during the day. Using high beam headlights around other drivers can be dangerous.
See the exact questions that will be on the 2025 Arizona DMV exam.
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2025 Arizona | Frequently Asked Questions
A Commercial Driver's License (CDL) Class A in Arizona is a license that allows the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the towed vehicle is heavier than 10,000 pounds. It typically covers vehicles like tractor-trailers, truck and trailer combinations, and flatbeds.
A Class A CDL license in Arizona permits the holder to operate a variety of vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. The key criteria is that the vehicle or combination of vehicles must have a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, with the towed vehicle exceeding 10,000 pounds.
To obtain a Class A CDL license in Arizona, you must be at least 18 years old (21 for interstate driving), hold a valid Arizona driver's license, pass a vision exam, and successfully complete a written knowledge test. Additionally, you'll need to pass a skills test which includes a pre-trip vehicle inspection, a basic controls test, and an on-road driving exam.
In Arizona, you must be at least 18 years old to qualify for a Class A CDL license for intrastate driving (within Arizona only). However, if you plan to drive interstate (across state lines), or carry hazardous materials, you must be at least 21 years old.
Specific endorsements are not required for a Class A CDL license, but they can expand your driving opportunities. Endorsements like Hazmat (H), Tank Vehicle (N), Passenger (P), and School Bus (S) require additional tests. These endorsements allow drivers to operate special types of commercial vehicles or transport specific types of goods.
The Class A CDL skills test in Arizona encompasses three main parts. First is the pre-trip vehicle inspection, where applicants must demonstrate knowledge of the vehicle and its parts. The second part is a basic controls test, which assesses fundamental driving skills. The final part is an on-road driving exam, testing the applicant's ability to safely operate the vehicle in various traffic conditions.
Yes, there are limitations. A Class A CDL holder in Arizona can only operate vehicles they are specifically endorsed for. They must also adhere to federal hours of service regulations and maintain a logbook of their driving hours. Additionally, they cannot drive if their blood alcohol concentration is 0.04% or higher, which is stricter than the limit for non-commercial drivers.
Yes, it is possible. In Arizona, the written Class A CDL test is available in several languages besides English. However, federal regulations require that all commercial drivers demonstrate proficiency in English to ensure they can understand traffic signs, signals, law enforcement officers and emergency personnel. Therefore, you should have enough command of English for safety on the road.
Yes, you can request accommodations for the Class A CDL written test in Arizona if you have a disability. The Arizona Department of Transportation (ADOT) complies with the Americans with Disabilities Act (ADA) and provides reasonable accommodations such as providing a sign language interpreter, reader, or enlarged print. Contact ADOT's Civil Rights Office for more information.
Yes, you can retake the Class A CDL written test in Arizona if you don't pass on your first attempt. However, you must wait a minimum of one day before retaking the exam. If you fail three times, you'll need to pay a new application fee. It's recommended to study thoroughly to increase your chances of passing on the next attempt.
