Knowledge Test Class B #2
Class B Driving Test | South Dakota 2025 #2 Page 2 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 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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8 . When coming to a stop, you should apply the brake pedal by:
When stopping, you should push the brake pedal down gradually. Braking gradually will help you to maintain proper control of your vehicle.
9 . If you plan to slow down, you can warn drivers behind you by:
Putting your hand out the driver's side window and waving.
Before slowing down, it is a good idea to flash your brake lights by lightly tapping your brake pedal a few times. This will warn drivers behind you of your plans to slow down.
10 . If being tailgated, you should:
If you are being tailgated, you should increase the distance between your vehicle and the vehicle ahead of you. This reduces the need for you to make sudden changes in speed or direction while making it easier for the tailgater to pass your vehicle.
11 . How can you check hydraulic brakes?
Check hydraulic brakes by pumping the brake pedal three times before applying firm pressure to the pedal for five seconds. The pedal should not move. If it does, there may be a leak or some other problem in the braking system.
12 . In hot weather, spots on the pavement where tar is bleeding:
Tar in road pavement often rises to the surface of the road, or "bleeds," in very hot weather. Watch for such areas because they can be very slippery.
13 . When starting a vehicle, the coolant temperature gauge should:
Flash until it reaches the normal operating range.
Keep an eye on the gauges after starting the engine. The coolant temperature gauge should begin a gradual rise to the normal operating range.
14 . How much distance will an air brake-equipped vehicle need to come to a complete stop if it is traveling at 55 mph under ideal driving conditions?
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.
2025 South Dakota | Frequently Asked Questions
A CDL Class A license in South Dakota is defined as a commercial driver's license that permits the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed exceeds 10,000 pounds. It's typically used for semi-trucks and tractor-trailers.
In South Dakota, a Class A CDL license allows you to operate a range of commercial vehicles. These include tractor-trailers, truck and trailer combinations, flatbeds, livestock carriers, and tank vehicles. It also allows the operation of all vehicles under Classes B and C, provided you have the appropriate endorsements.
To obtain a Class A CDL license in South Dakota, applicants must be at least 18 years old (21 for interstate driving), possess a valid South Dakota driver's license, pass a vision test, and successfully complete a knowledge test and skills test. They must also submit a Medical Examiner's Certificate and pass a background check if hauling hazardous materials.
In South Dakota, to qualify for a Class A CDL license, you must be at least 21 years old for interstate driving. However, if you plan to drive only within South Dakota (intrastate driving), you can apply for a Class A CDL license at 18 years old.
While a Class A CDL license in South Dakota allows you to operate a variety of vehicles, specific endorsements may be required for certain types. For example, a tanker endorsement is needed to haul liquid loads, a hazmat endorsement is required for transporting hazardous materials, and a doubles/triples endorsement is necessary for towing double or triple trailers.
The Class A CDL skills test in South Dakota encompasses three parts: a pre-trip inspection to ensure the vehicle is safe to drive, a basic controls test to assess your ability to control the vehicle, and a road test to evaluate your on-road driving skills under various traffic conditions and maneuvers. It's important to pass all three parts.
Yes, there are limitations. Class A CDL license holders in South Dakota are restricted by the federal hours of service regulations, which limit driving time to prevent fatigue. Additionally, they must comply with weight limits and may need specific endorsements for certain types of vehicles or cargo. Also, CDL holders are held to stricter DUI standards compared to regular drivers.
Yes, it is possible. In South Dakota, the written Class A CDL test is available in multiple languages, including Spanish. However, the Federal Motor Carrier Safety Administration requires all commercial drivers to read and speak English sufficiently to converse with the general public, understand traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, you can request accommodations for the Class A CDL written test if you have a disability. South Dakota's Department of Public Safety complies with the Americans with Disabilities Act (ADA), providing reasonable accommodations such as accessible testing locations, additional time, or alternative test formats. However, you must provide appropriate documentation of your disability when making your request.
Yes, if you don't pass the Class A CDL written test in South Dakota, you can retake it. However, you must wait at least one day before retesting. There may be additional retest fees, and if you fail the test multiple times, additional restrictions or requirements may be imposed. Always review the manual and consider a prep course before retesting.