Knowledge Test Class B #1
Class B Driving Test | Arizona 2026 #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 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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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 2026 Arizona DMV exam.
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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.
