Knowledge Test Class A #1
Class A Driving Test | Wisconsin 2026 #1 Page 4 of 7
Train for FREE online with our Wisconsin class A 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 WI CDL class A 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 A requirements may vary from state to state.
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22 . When checking the springs during a vehicle inspection, do all of the following, except:
Glue cracked leaf springs.
When checking the springs as part of the vehicle inspection test, you should look for missing, shifted, cracked, or broken leaf springs, as well as broken or distorted coil springs. If the vehicle is equipped with torsion bars, torque arms, or other types of suspension components, ensure that they are not damaged and are mounted securely.
23 . What can happen if the air pressure gets too low in an air brake system?
Pressing and releasing the brake pedal unnecessarily can let air out of the braking system faster than the compressor can replace it. Air brakes may cease to work effectively if the pressure becomes too low.
24 . When checking your tires, which of the following is not an issue to correct?
Tread depth of at least 4/32 of an inch on the front tires
Problems to check for when inspecting tires include: air pressure that is too low or too high; using radial and bias-ply tires together; tread depth of less than 4/32 of an inch in major grooves on front tires; and tread depth of less than 2/32 of an inch on all other tires.
25 . When doing an inspection, ensure that the brake pads are:
Free of oil or grease.
When inspecting a vehicle's brakes, you should make sure the shoes and pads do not have oil, grease, or brake fluid on them.
26 . Bracing is used to:
Blocking and bracing are used to prevent cargo from shifting in transit. Blocking is used in the front, in the back, and on the sides of a piece of cargo to prevent movement. Bracing prevents movement by reaching from the upper portion of a piece of cargo to the floor and sides of the cargo compartment.
27 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
28 . Which of the following is not an example of a distracted person that motorists should be worried about?
A person sitting on a bench waiting for a bus
Drivers who are holding conversations with others may not be paying full attention to the road and may make unsafe moves. Children do not always pay attention to traffic and may dart into the road without looking. Exercise caution when driving near road workers. This helps to keep the workers and other distracted drivers safe.
See the exact questions that will be on the 2026 Wisconsin DMV exam.
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2026 Wisconsin | Frequently Asked Questions
In Wisconsin, obtaining a CDL Tank Endorsement requires passing a written test. To prepare, study the Tank Vehicles section of the Wisconsin Commercial Driver's Manual. After studying, schedule a test at your local DMV. If you pass, you'll need to pay a fee to add the endorsement to your CDL. Remember, you must already have a valid CDL to qualify.
To obtain a CDL Tank license, you must first possess a valid Commercial Driver's License (CDL). Then, study the Tank Vehicles section of your state's Commercial Driver's Manual. You'll need to pass the written tank vehicle endorsement test at your local DMV. Lastly, pay the required fee to add the endorsement to your CDL.
While specific training or experience isn't legally required for a CDL Tank endorsement, it's highly recommended. Knowledge about handling tank vehicles, understanding the surge effect, and knowing safety procedures is crucial. Studying the Tank Vehicles section of the Commercial Driver's Manual thoroughly helps. However, practical experience or training can significantly improve your understanding and driving skills.
Yes, to obtain a CDL Tank endorsement, you need to pass an additional written test. This test covers specific knowledge related to the safe operation of commercial tank vehicles. It includes topics like vehicle inspection, driving techniques, and dealing with emergencies. The content for this test can be found in the Tank Vehicles section of the Commercial Driver's Manual.
The written test for the CDL Tank endorsement includes topics such as: the inspection and operation of tank vehicles, understanding the "baffled" and "unbaffled" tanks, managing the surge effect, handling high center of gravity, safe driving techniques, and responding to emergencies or hazardous conditions related to tank vehicles. The goal is to ensure safe and knowledgeable operation of tank vehicles.
The CDL Tank endorsement assessment primarily evaluates your knowledge rather than specific driving maneuvers. It focuses on understanding the unique handling of tank vehicles, managing surge, comprehending the differences between baffled and unbaffled tanks, and dealing with hazardous materials. Practical skills are usually assessed during the general CDL road test, not in the tank endorsement test.
Drivers with a CDL Tank endorsement must comply with federal and state regulations. They cannot drive tank vehicles without a valid CDL and the Tank endorsement. Additionally, if the tank vehicle is carrying hazardous materials, they must also have a Hazmat endorsement. Exceeding weight limits, failing to secure loads properly, or not following safety regulations can lead to penalties or loss of the endorsement.
No, you cannot transport liquid or gas materials in a tank vehicle without a valid Commercial Driver's License (CDL) with a Tank endorsement. This is a federal requirement and applies in all states, including Wisconsin. Violating this rule can lead to serious penalties, including fines and suspension of your CDL.
The CDL Tank endorsement can be added to your current commercial driver's license. You don't need a fresh application for a new license. However, you will need to pass a knowledge test specific to tank vehicles, and in some cases, a skills test may also be required. Once you pass, the Tank endorsement will be added to your existing CDL.
Yes, handling hazardous materials with a CDL Tank endorsement requires additional certifications. You must possess a Hazardous Materials (Hazmat) endorsement along with your CDL Tank endorsement. To get this, you'll need to pass a written test on federal and state regulations for transporting hazardous materials and undergo a federal background check.
