Combination #1
Combination Vehicles Practice Test | Arizona 2025 #1 Page 3 of 3
Train for FREE online with our Arizona CDL combination vehicle 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 combination 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 DMV requirements for issuing a combination license may vary from state to state.
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15 . Maintain a following distance of at least ____ for every 10 feet of your vehicle if you are traveling at a speed under 40 mph.
At speeds below 40 mph, you should allow at least one second of following distance for every 10 feet of your vehicle. Follow the same formula when traveling at faster speeds, then add one additional second to your following distance. Remember that larger vehicles require more space to stop than smaller vehicles.
16 . Fully-loaded rigs:
Fully-loaded rigs are more vulnerable to rolling over than empty rigs because the weight of the cargo gives the vehicles higher centers of gravity.
17 . What is a bobtail tractor?
Tractors without semi-trailers are referred to as bobtail tractors. Operating a bobtail tractor requires drivers to exercise caution.
19 . The tractor protection valve:
A tractor protection valve keeps air in a tractor or truck air brake system should the trailer break away or develop a bad leak. The valve will close automatically if the pressure drops to an unsafe level.
20 . If the emergency air line loses pressure:
The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.
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.
