Knowledge Test Class B #1
Class B Driving Test | Wisconsin 2025 #1 Page 5 of 7
Train for FREE online with our Wisconsin 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 WI 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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29 . Dry bulk tanks:
Cannot be driven on interstates.
Dry bulk tanks require special care when being driven because they have high centers of gravity. Drivers should also be careful because the materials being carried can easily shift in transit, causing a change in the vehicle's handling.
30 . If your vehicle is equipped with a cargo lift, you should ensure that:
The lift is the proper color.
When checking a cargo lift as part of your vehicle inspection test, you should check for leaking, damaged, or missing parts. The lift must be fully retracted and latched securely.
31 . What do air brakes use to make the brakes work?
Many large CMVs are equipped with air brakes. An air braking system uses compressed air to operate.
32 . Brakes can get out of adjustment quickly, especially:
Brakes are particularly prone to getting out of adjustment if they are hot. Be sure to routinely check the adjustment of your brakes. For a vehicle to be safely controlled, all brakes must be properly functioning and adjusted.
33 . To prevent fatigue while driving, you should:
Close the vents.
A hot, poorly-ventilated area can make a person sleepy. Opening a window, opening a vent, or using the air conditioning can help keep the cab cool and reduce the risk of fatigue.
34 . The center of gravity in a trailer should be:
The weight of cargo in a vehicle should be distributed as low as possible. Having a center of gravity that is too high will increase the risk of a rollover.
35 . In general, the length limit for a combination of 2 vehicles and load is:
100 feet
Under Wisconsin law, the length of a 2 vehicle combination, including the load, is generally limited to 65 feet.
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2025 Wisconsin | Frequently Asked Questions
A CDL Class A license in Wisconsin allows holders to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the vehicle(s) being towed are over 10,000 pounds. This includes tractor-trailers, truck and trailer combinations, and flatbeds. The license also requires specific endorsements for certain types of vehicles.
A Class A CDL license in Wisconsin allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. These are typically vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 lbs or more, where the vehicle being towed weighs more than 10,000 lbs.
To obtain a Class A CDL license in Wisconsin, applicants must be at least 18 years old (21 for interstate driving), possess a valid Wisconsin driver's license, pass a vision test, and successfully complete a general knowledge test. They must also pass skills tests, including a pre-trip vehicle inspection, basic vehicle control, and on-road driving. Medical examinations may also be required.
In Wisconsin, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate driving (within Wisconsin only). However, to drive a commercial vehicle across state lines (interstate driving), you must be at least 21 years old.
Endorsements are not required for a Class A CDL license, but they can provide additional driving privileges. These include T (Double/Triple Trailers), P (Passenger), N (Tank vehicles), H (Hazardous materials), and S (School Bus). Each endorsement requires passing specific knowledge tests, and some may require additional skills tests. It's important to get the endorsements that match your job requirements.
The Class A CDL skills test in Wisconsin encompasses three main areas: a pre-trip vehicle inspection to ensure the vehicle is safe to drive, a basic vehicle control test to demonstrate your ability to maneuver and control the vehicle, and an on-road driving test where you'll be tested on a variety of traffic situations and road conditions.
Yes, Class A CDL license holders in Wisconsin may face limitations depending on their specific circumstances. For instance, if the driver doesn't pass the air brake portion of the test, they get an "L" restriction and can't operate vehicles with air brakes. Additionally, drivers under 21 are restricted to intrastate operation. Also, certain medical conditions may impose restrictions.
Yes, in Wisconsin, the written Class A CDL test is available in English, Spanish, and Hmong. However, applicants should note that all CDL applicants must be able to read and 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, Wisconsin's Department of Transportation (WisDOT) is committed to providing accessible services. If you have a disability and require accommodations for the Class A CDL written test, you can make a request. Accommodations may include additional time, a separate testing room, or the use of special equipment. It's recommended to make the request as early as possible.
Yes, you can retake the Class A CDL written test in Wisconsin if you don't pass on your first attempt. However, you may have to wait one day before retaking the test. There might also be additional fees for each retest. It's recommended that you review the areas you struggled with before attempting the test again.
