Knowledge Test Class B #2
Class B Driving Test | Arizona 2025 #2 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 . When traction is poor, a driver should accelerate especially slowly:
You should accelerate very gradually when driving under slippery conditions. Using too much power in such conditions may cause you to lose control of your vehicle.
44 . An air compressor governor controls:
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
45 . Bridges usually:
Bridges tend to freeze before other parts of the road surface. You should be especially careful on bridges when temperatures are near the freezing point.
46 . On a curve, the posted speed limit:
The posted speed limit on a curve may be safe to be taken by cars, but can still be too fast to be taken by larger vehicles, such as trucks. An operator driving their truck at the posted limit on a curve could cause their vehicle to tip over.
47 . What is the number one cause of death and injury in a work zone?
Speeding is the leading cause of death and injury in work zones. Use extra caution when driving near workers in a work zone.
48 . Drowsy driving is most common during:
Drowsy driving is most common during the night because people are naturally prone to be less alert in the hours during which they are normally asleep. If you must drive at night, take every precaution to prevent fatigued driving.
49 . One way to prevent fatigue on long trips is to:
To avoid becoming fatigued on a long trip, you should take a break after every 100 miles or two hours of driving. Driving through the night, or during any other time when you would normally be asleep, raises the danger of fatigue.
50 . What color malfunction lamps do vehicles equipped with ABS have?
Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.
See the exact questions that will be on the 2025 Arizona DMV exam.
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2025 Arizona | Frequently Asked Questions
A CDL Class B license in Arizona allows holders to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or towing a vehicle not exceeding 10,000 pounds GVWR. This includes buses, farm labor vehicles, and any vehicle that transports hazardous materials. The license requires passing a general knowledge test and any relevant endorsement tests.
A Class B CDL license in Arizona allows the operation of single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or towing a vehicle not exceeding 10,000 pounds GVWR. This includes straight trucks, large buses, segmented buses, farm labor vehicles, and any vehicles transporting hazardous materials.
To acquire a Class B CDL license in Arizona, you must be at least 18 years old (21 for interstate driving), possess a valid Arizona driver's license, pass a vision test, and pass the written knowledge test. You will also need to complete a commercial driver's license application and pay the necessary fees. Lastly, you must pass a road skills test in the type of vehicle you plan to drive.
In Arizona, you must be at least 18 years old to apply for a Class B Commercial Driver's License (CDL) for intrastate driving (within Arizona only). However, to drive interstate (across state lines) or to carry hazardous materials, you must be at least 21 years old.
Specific endorsements aren't necessary for a Class B CDL license but they can expand the types of vehicles you're allowed to operate. Endorsements include passenger (P), school bus (S), and hazardous materials (H). Each endorsement requires additional knowledge tests, and the hazardous materials endorsement requires a background check.
The Class B CDL skills assessment in Arizona includes three parts: a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving test. These assessments evaluate your ability to inspect your vehicle for safety, control the vehicle in various settings (like backing and turning), and drive safely in real-world traffic situations.
Yes, Class B CDL license holders can only drive vehicles designed to carry 24 passengers or more, including the driver, and single vehicles with a GVWR of 26,001 lbs or more. They cannot tow trailers more than 10,000 lbs. If they want to drive combination vehicles or tow larger trailers, they need a Class A CDL.
Yes, the Arizona Department of Transportation offers the written Class B CDL test in Spanish. However, federal regulations require that all CDL holders understand English well enough to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, you can request test accommodations for the Class B CDL written exam in Arizona if you have a disability. The Arizona Department of Transportation (ADOT) provides reasonable testing accommodations under the Americans with Disabilities Act. Contact your local Motor Vehicle Division office in advance to arrange these accommodations.
Yes, you can retake the Class B CDL written test in Arizona if you fail on your first attempt. There is generally a waiting period between attempts, usually one day. You will also need to pay a retesting fee each time you retake the test. It's recommended to study thoroughly before retesting to increase your chances of passing.
