Knowledge Test Class A #2
Class A Driving Test | South Dakota 2025 #2 Page 7 of 7
Train for FREE online with our South Dakota 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 SD CDL class A 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 A requirements may vary from state to state.
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43 . When an engine is started:
The hood must be open.
After a vehicle is started, the warning lights and buzzers should go out after a few seconds. If the warning signals do not turn off, there may be something wrong with the vehicle.
44 . When changing lanes, you should:
Quickly swerve your vehicle into the other lane.
Always check your mirrors and use the proper signal when changing lanes. Be sure there is enough space for your entire vehicle in the next lane before you begin moving.
45 . A cargo cover that flaps while you are driving:
Can attract birds.
If cargo is covered, the cover should not flap in the wind in transit. The cover could tear loose, uncovering the cargo while potentially blocking your view or the view of others.
46 . When driving with a load, the driver should:
Not check on the cargo if it was secured properly before starting the trip.
Cargo and its securing devices must be inspected before starting a trip. After beginning a trip, the driver should check the load and securing devices within the first 50 miles on the road, every three hours or 150 miles traveled, and after every break.
47 . When driving at highway speeds, you should watch the road about ____ ahead of your vehicle.
Stay aware of upcoming obstacles and hazards by consistently watching the road at least 12 to 15 seconds ahead of your vehicle. When traveling at highway speeds, this is equivalent to about a quarter of a mile.
48 . What is a retarder?
Retarders help to slow vehicles, reducing drivers' need to use brakes.
49 . Header boards:
A header board protects a driver from moving cargo in the event of a crash or emergency stop.
50 . What kind of force do emergency brakes use?
Air brakes are really three different braking systems: the service brake, the parking brake, and the emergency brake. Emergency and parking brakes are applied with mechanical force.
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2025 South Dakota | Frequently Asked Questions
In South Dakota, a Commercial Driver's License (CDL) Class B is required to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not in excess of 10,000 pounds. This includes buses, farm labor vehicles, and any vehicle designed to transport 16 or more passengers.
A Class B CDL in South Dakota permits you to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or tow a vehicle not exceeding 10,000 pounds. This includes large buses, segmented buses, dump trucks with small trailers, straight trucks and delivery trucks.
To acquire a Class B CDL license in South Dakota, you must be at least 18 years old (21 if you plan to drive across state lines), have a valid South Dakota driver's license, pass a vision test, and successfully complete both the written and skills tests for the Class B CDL. You must also provide proof of your identity, social security number and South Dakota residency.
In South Dakota, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL). However, if you plan to drive commercial vehicles across state lines or transport hazardous materials, you must be at least 21 years old. This age requirement is consistent with federal law.
Yes, specific endorsements may be necessary depending on the type of vehicle you plan to drive or cargo you plan to carry with a Class B CDL. For example, you may need a Passenger endorsement for buses, a School Bus endorsement for school buses, or a Hazardous Materials endorsement for transporting hazardous materials. Each endorsement requires additional testing.
The Class B CDL skills assessment in South Dakota includes three parts: pre-trip inspection, basic control skills, and on-road driving. The pre-trip inspection tests your ability to assess vehicle safety. Basic control skills focus on maneuvers like backing up. Lastly, the on-road test assesses your ability to safely operate the vehicle in various traffic situations and road conditions.
Yes, there are limitations for Class B CDL license holders. They are licensed to operate vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or a vehicle towing another vehicle not exceeding 10,000 pounds. They cannot operate Class A vehicles unless they have the appropriate endorsement. Also, interstate driving is restricted to drivers aged 21 and above.
In South Dakota, the written Class B CDL test is primarily administered in English. However, some locations may offer it in Spanish. It's important to check with the local DMV office in advance. Keep in mind that English proficiency is required to obtain a CDL, as federal regulations mandate understanding of English to drive commercial vehicles.
Yes, you can request accommodations for the Class B CDL written exam in South Dakota if you have a disability. You'll need to provide documentation of your disability and specify the type of accommodation you're requesting. South Dakota is committed to providing equal access to testing opportunities for all individuals. It's advised to make your request well in advance of your scheduled test date.
Yes, if you fail the Class B CDL written test in South Dakota, you are allowed to retake it. However, you must wait one day before retaking the test. If you fail three times, you will have to wait 60 days before attempting again. It's advisable to study thoroughly and use practice tests to prepare for your next attempt.
