Knowledge Test Class B #1
Class B Driving Test | Arizona 2026 #1 Page 2 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 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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8 . Blocking a load:
Cargo should be blocked to prevent it from sliding around in transit. The shifting of weight in transit can make steering and handling difficult for the driver.
9 . What is traction?
Traction is friction between your tires and the surface of the road. Adequate traction is necessary for braking and steering.
10 . What is the average driver’s reaction time?
The average driver has a reaction time between three-quarters of a second and one second. At 55 mph, this corresponds to a distance of 61 feet traveled.
11 . Manual air tank drains should be:
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
12 . 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.
13 . An Anti-Lock Braking System (ABS):
Anti-Lock Braking Systems (ABS) are compatible with air brakes and help a driver maintain control of their vehicle by preventing wheel lockup.
14 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
See the exact questions that will be on the 2026 Arizona 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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2026 Arizona | Frequently Asked Questions
In Arizona, to secure a CDL Doubles/Triples endorsement, you must first have a valid Commercial Driver's License (CDL). Then, you'll need to pass the Doubles/Triples endorsement knowledge test administered by the Arizona Department of Transportation. Studying the CDL manual and taking practice tests can help prepare for this exam.
To obtain a CDL Doubles/Triples license, you first need a valid Commercial Driver's License (CDL). You must then pass the Doubles/Triples endorsement knowledge test. Preparation can include studying the CDL manual, particularly sections on coupling and uncoupling and inspecting doubles and triples. Lastly, pay the required fees to the Arizona Department of Transportation.
While Arizona doesn't mandate specific training for a CDL Doubles/Triples endorsement, it's beneficial to have practical experience or training. Understanding how to handle these larger, more complex vehicles safely is crucial. You'll need to pass the Doubles/Triples Endorsement Test, so studying the CDL manual and possibly taking a preparation course could be helpful.
Yes, to obtain a CDL Doubles/Triples endorsement in Arizona, you must pass the Doubles/Triples endorsement knowledge test. This test assesses your understanding of specific rules and safety standards for operating these vehicles. Studying the CDL manual and taking practice tests can help you prepare for this exam.
The CDL Doubles/Triples endorsement test in Arizona is primarily a knowledge test, focusing on understanding safety rules and procedures rather than specific maneuvers. Key topics include coupling and uncoupling, inspecting doubles and triples, and managing the vehicles' size and weight. However, practical skills like maneuvering and controlling these large vehicles are crucial for safe operation on the road.
No, it is not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in Arizona. Driving such vehicles without the proper endorsement is illegal and can result in serious penalties, including fines and suspension or revocation of your commercial driver's license.
The CDL Doubles/Triples endorsement can be added to your existing commercial driver's license. You do not need to initiate a new application for a separate license. However, you will need to pass the Doubles/Triples endorsement knowledge test and pay the appropriate fees to have this endorsement added to your CDL.
Yes, drivers with a CDL Doubles/Triples endorsement must adhere to specific limitations. For example, the maximum length for a trailer in a double/triple combination is 28.5 feet. Furthermore, drivers are restricted to hauling doubles/triples on designated highways and during specific hours of the day, as determined by state and federal regulations.
The maximum length for a trailer in a double/triple combination is 28.5 feet. In terms of weight, federal law allows a maximum gross vehicle weight of 80,000 pounds, but this can be influenced by the number and spacing of axles. However, states can set their own restrictions, so it's advisable to check with local authorities.
Yes, drivers with a CDL Doubles/Triples endorsement must follow specific safety regulations. These include maintaining a safe following distance, not exceeding speed limits, ensuring proper coupling and uncoupling of trailers, and conducting pre-trip inspections. Additionally, drivers must understand the high rollover risk associated with these trailers and the effects of "crack-the-whip" scenarios.
