Knowledge Test Class B #1
Class B Driving Test | South Dakota 2026 #1 Page 7 of 7
Train for FREE online with our South Dakota 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 SD 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 . If you identify a large box in your lane on the road ahead, you should:
Swerve into another lane of traffic.
Slow down and be very careful if you see foreign objects in your lane. Remember that even something that seems relatively light and harmless, like a cardboard box, could contain harder or heavier items that could cause damage to your vehicle.
44 . Most heavy vehicles require ____ to change gears.
Triple shifting
Most heavy vehicles with manual transmissions require double clutching to change gears. A driver should release the accelerator, push in the clutch, and shift into neutral at the same time. After releasing the clutch and allowing the vehicle to change to the necessary speed, the driver should push in the clutch, shift gears, then simultaneously release the clutch and accelerate.
45 . Most heavy trucks with manual transmissions require ____ to change gears.
Quadruple clutching
Most heavy vehicles with manual transmissions require double clutching to shift gears. Learning to effectively change gears by double clutching takes practice.
46 . After traveling under an overpass during the driving skills test, you may be asked to recall:
If there was a shoulder near the roadway.
If you drive under an overpass during the on-road driving skills test, your examiner may ask you to recall the posted clearance or height of the overpass.
47 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.
48 . When approaching a vehicle for a pre-trip inspection, a driver should look under the vehicle:
When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks of oil, grease, or fuel. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.
49 . When you need to brake, how can you warn drivers behind you?
Change lanes.
To warn drivers behind you that you are about to slow down, it may be a good idea to first lightly tap your brake pedal a few times to make the brake lights flash.
50 . Which of the following is not a good rule when using turn signals?
When using your turn signals, you should signal well before the turn or lane change, signal continuously throughout the turn or lane change, and cancel the signal after you have completed your move.
2026 South Dakota | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in South Dakota, you must already possess a Commercial Driver's License (CDL). Then, you need to pass the Doubles/Triples Endorsement knowledge test. Study the relevant sections in the South Dakota CDL Manual beforehand. After passing the test, you'll receive your endorsement. Remember, driving experience with these types of vehicles is recommended.
To obtain a CDL Doubles/Triples license, you must already have a Commercial Driver's License (CDL). Then, pass the Doubles/Triples endorsement knowledge test. This test covers information found in the South Dakota CDL manual. It is also beneficial to have practical experience driving these types of vehicles, although not required. After passing the test, you'll receive your endorsement.
While specialized experience or training isn't a legal requirement for a CDL Doubles/Triples endorsement in South Dakota, it's highly recommended. Knowledge of handling these vehicles can be beneficial for the endorsement knowledge test. Studying the South Dakota CDL Manual, particularly sections on Doubles/Triples, is essential. Practical experience can also increase your chances of passing the driving test.
Yes, to obtain a CDL Doubles/Triples endorsement in South Dakota, you must pass an additional knowledge test specifically for Doubles/Triples. This test covers topics like coupling and uncoupling, inspecting doubles and triples, and handling these types of vehicles. The information for this test is found in the South Dakota CDL Manual.
The CDL Doubles/Triples endorsement test in South Dakota is a knowledge test, not a skills test. Therefore, you won't need to showcase any specific maneuvers. However, the test will cover topics such as coupling and uncoupling, inspecting doubles and triples, and the procedures for handling these types of vehicles. It's essential to understand these aspects thoroughly.
No, it is not permissible. In South Dakota, 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 potential suspension of your CDL.
To add the CDL Doubles/Triples endorsement to your current license in South Dakota, you will need to initiate a new application. You cannot simply append the endorsement to your existing license. You will have to meet the requirements, including passing the knowledge test and paying the necessary fees, to obtain the endorsement.
Yes, there are some limitations for drivers holding a CDL Doubles/Triples endorsement. These drivers are only allowed to operate double and triple trailers. They cannot operate other types of commercial vehicles unless they have the appropriate endorsements. Also, they must follow all federal and state regulations regarding maximum weight, length, and safety requirements for double/triple trailers.
In South Dakota, the maximum legal weight for a vehicle (including double/triple trailers) is 80,000 pounds. The maximum length for a double trailer is 81.5 feet and for triple trailers, it's 103 feet. However, these limits can be exceeded with special permits, which are issued based on factors like route capacity and vehicle configuration.
Yes, there are specific safety guidelines. Drivers with a CDL Doubles/Triples endorsement must perform regular inspections to check brakes, tires, lights, and other safety equipment. They must also follow special procedures for coupling and uncoupling trailers, and they must maintain safe following distances to allow for the increased stopping time needed for these larger vehicles.