Knowledge Test Class B #1
Class B Driving Test | Minnesota 2025 #1 Page 6 of 7
Train for FREE online with our Minnesota 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 MN 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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36 . When driving:
You should always use turn signals to warn others about your intentions.
It is important to communicate your intentions to others on the road. Make sure to signal before turning or changing lanes, even if no other vehicles are nearby.
37 . In cold weather, an alcohol evaporator should be checked and filled:
Once a month.
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.
38 . Header boards:
Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.
39 . Mirrors should be adjusted only after a vehicle has been driven for at least 15 minutes.
Proper mirror adjustment is essential to the safe operation of a vehicle. Mirrors should be adjusted prior to the start of any trip.
40 . On a flatbed trailer, a load does not need to be tied down if it is heavy enough.
On flatbed trailers and on trailers without sides, cargo must be tied down to prevent it from shifting or falling off in transit. You should be aware of tie-down requirements for your particular cargo.
41 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is:
4 psi in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
42 . The tire load:
Tire load is the maximum weight a tire can safely carry at a given pressure. This rating is stated on the side of each tire.
2025 Minnesota | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Minnesota, you must first possess a valid CDL. You then need to study the relevant section in the Minnesota Commercial Driver's Manual and pass the written knowledge test at a DVS exam station. The endorsement will be added to your CDL upon passing the test.
To obtain a CDL Doubles/Triples license, you must first hold a valid Commercial Driver's License (CDL). Then, study the relevant sections in your state's Commercial Driver's Manual. After studying, take and pass the Doubles/Triples endorsement knowledge test at your local DMV. This endorsement will be added to your CDL upon passing.
No specific experience or training is legally required to obtain a CDL Doubles/Triples endorsement. However, you need to have a valid CDL. You must study the relevant sections of your state's Commercial Driver's Manual and pass the written knowledge test. Practical experience or training driving such vehicles can be beneficial but is not mandatory.
Yes, to obtain a CDL Doubles/Triples endorsement, you are required to pass an additional written knowledge test. This test focuses on specific rules and safety regulations for driving double and triple trailers. The specific content of the test can be found in your state's Commercial Driver's Manual.
Actually, there is no specific skills test or road test required for the Doubles/Triples endorsement on your CDL. You only need to pass a written knowledge test. This focuses on understanding the handling and safety rules for double and triple trailers, such as coupling and uncoupling, inspecting doubles and triples, and checking air brakes.
No, it's not permissible. In Minnesota, like in all states, you must have a valid Commercial Driver's License (CDL) with a Doubles/Triples endorsement to legally operate double or triple trailers. Operating these vehicles without the proper endorsement can result in serious penalties, including fines and suspension of your driving privileges.
You can add the Doubles/Triples endorsement to your current commercial driver's license (CDL). You don't need to initiate a new application for a CDL. However, you will need to pass the Doubles/Triples written knowledge test and pay the required fees to add this endorsement to your existing CDL.
Yes, there are limitations. While a CDL Doubles/Triples endorsement allows you to drive vehicles with more than one trailer, it doesn't permit you to drive all types of commercial vehicles. For instance, if you want to drive a school bus or a tanker truck, you would need additional endorsements. Also, federal regulations limit the overall length of these vehicles.
In Minnesota, the maximum weight limit for double/triple trailers is 80,000 pounds. The maximum length for a double trailer is 81 feet 6 inches. For a triple trailer, the length should not exceed 100 feet. These limits can vary based on road and bridge laws, so always check local regulations.
Yes, there are specific safety guidelines. Drivers with a CDL Doubles/Triples endorsement must follow regulations regarding securement of cargo, regular vehicle inspections, and maintaining safe following distances. They must also be trained in coupling and uncoupling of units and be aware of the high rollover risk associated with these types of vehicles due to their length and weight.