South Dakota DMV Driver's License Knowledge Test — Questions and Answers

Question 1: If you move to a new address within South Dakota, what must you do with your vehicle registration?

Nothing; it’s automatically updated
Notify your insurance company only
Register your vehicle again at your new address
Update your address with the DMV within 30 days (Correct answer)

Correct answer: Update your address with the DMV within 30 days

If you move to a new address within South Dakota, you are legally required to update your address with the Department of Motor Vehicles (DMV) within 30 days. This ensures that your vehicle registration records are current and that you receive important communications from the DMV. Failing to update your address can lead to missed notices and potential legal issues.

Question 2: What does an orange diamond sign reading "ROAD WORK AHEAD" mean in South Dakota?

Optional detour available
Construction or maintenance zone ahead requiring reduced speed (Correct answer)
Road conditions are poor
Permanent road feature

Correct answer: Construction or maintenance zone ahead requiring reduced speed

Orange signs warn of construction and work zones where workers and equipment may be present, requiring drivers to slow down and use caution.

Question 3: What is the legal blood alcohol concentration limit for drivers 21 and over in South Dakota?

0.05%
0.10%
0.02%
0.08% (Correct answer)

Correct answer: 0.08%

South Dakota sets the legal BAC limit at 0.08% for drivers aged 21 and older, consistent with the national standard.

Question 4: In South Dakota, what does a green arrow signal mean?

Oncoming traffic is completely stopped
You have absolute right-of-way
You may proceed in the direction of the arrow after yielding to vehicles and pedestrians in the intersection (Correct answer)
Only turning traffic may proceed

Correct answer: You may proceed in the direction of the arrow after yielding to vehicles and pedestrians in the intersection

A green arrow indicates you may proceed in the direction shown, but you must still yield to traffic and pedestrians already lawfully in the intersection.

Question 5: A first-offense DUI conviction in South Dakota can result in a jail sentence of up to:

2 years
1 year (Correct answer)
30 days
24 hours

Correct answer: 1 year

A first DUI offense in South Dakota is a Class 1 misdemeanor carrying up to one year in county jail and a fine of up to $2,000.

Question 6: In South Dakota, what must you do when approaching a stopped school bus with flashing red lights?

Honk to alert children
Slow down and pass carefully
Stop regardless of your direction of travel unless separated by a physical median (Correct answer)
Stop only if traveling in the same direction

Correct answer: Stop regardless of your direction of travel unless separated by a physical median

South Dakota law requires all traffic from both directions to stop for a school bus with activated red flashing lights, unless separated by a physical barrier.

Question 7: What does a round yellow sign with an X and the letters RR indicate in South Dakota?

Road repair ahead
Roundabout ahead
Rest area ahead
Railroad crossing ahead (Correct answer)

Correct answer: Railroad crossing ahead

This advance warning sign alerts drivers that a railroad crossing is ahead, giving them time to prepare to stop if a train is approaching.

Question 8: In South Dakota, what does a pentagon-shaped (five-sided) sign indicate?

School zone or school crossing ahead (Correct answer)
Work zone
No passing zone
Hospital zone

Correct answer: School zone or school crossing ahead

Pentagon-shaped signs are used exclusively to indicate school zones and school crossings, warning drivers that children may be present.

Question 9: In South Dakota, what is the proper way to share the road with large trucks?

Follow closely behind trucks to draft for fuel savings
Pass trucks on the right whenever possible
Honk to alert trucks of your presence
Avoid blind spots, give extra following distance, and do not cut in front after passing (Correct answer)

Correct answer: Avoid blind spots, give extra following distance, and do not cut in front after passing

Large trucks have significant blind spots on all four sides, need more stopping distance, and make wide turns. Stay visible and give them extra room.

Question 10: What effect does alcohol have on a driver's ability to judge distances and speed?

It causes overestimation of speed only
It distorts perception, making drivers misjudge distances and speeds (Correct answer)
It sharpens distance perception
It has no measurable effect on spatial perception

Correct answer: It distorts perception, making drivers misjudge distances and speeds

Alcohol distorts spatial perception, causing drivers to misjudge the distance between vehicles and the speed of oncoming or surrounding traffic.

Question 11: South Dakota's Motor Vehicle Division is part of which state agency?

Department of Transportation
Department of Public Safety
Department of Revenue (Correct answer)
Department of Commerce

Correct answer: Department of Revenue

In South Dakota, the Motor Vehicle Division that oversees titling and registration falls under the Department of Revenue.

Question 12: What does a blue rectangular sign with a gas pump symbol indicate on South Dakota highways?

No fuel for the next 50 miles
Gas prices are posted ahead
Gas station available at the next exit (Correct answer)
Electric vehicle charging station

Correct answer: Gas station available at the next exit

Blue motorist services signs indicate that gas stations, food, lodging, or other services are available at the next exit.

Question 13: In South Dakota, when is it legal to make a right turn on red?

After stopping completely and yielding to all traffic and pedestrians, unless a sign prohibits it (Correct answer)
It is never legal
Only at intersections with a green arrow
At any time without stopping

Correct answer: After stopping completely and yielding to all traffic and pedestrians, unless a sign prohibits it

Right turns on red are permitted in South Dakota after a complete stop and yielding to cross traffic and pedestrians, provided no sign prohibits it.

Question 14: Under South Dakota's Zero Tolerance Law, a driver under age 21 can be charged with a DUI if their BAC is at or above:

0.04%
0.00%
0.02% (Correct answer)
0.08%

Correct answer: 0.02%

South Dakota's Zero Tolerance Law prohibits drivers under 21 from operating a vehicle with a BAC of 0.02% or higher.

Question 15: If a South Dakota driver accumulates 15 or more points within 12 months, what action will the Division of Motor Vehicles take?

Revoke the driver's license permanently
Issue a warning letter only
Require a defensive driving course
Suspend the driver's license (Correct answer)

Correct answer: Suspend the driver's license

Accumulating 15 or more points within 12 months results in a license suspension in South Dakota.

Question 16: Under South Dakota law, who has the right to request a hearing after a license suspension notice is issued?

Only commercial driver's license holders
Any driver who receives a suspension notice (Correct answer)
Only drivers under 21 years old
Only drivers with a clean record

Correct answer: Any driver who receives a suspension notice

Any driver who receives a license suspension notice in South Dakota has the right to request an administrative hearing.

Question 17: What should you do if your vehicle begins to hydroplane on a wet South Dakota road?

Ease off the gas and steer straight without braking hard (Correct answer)
Turn sharply to the side of the road
Brake hard immediately
Accelerate through the water

Correct answer: Ease off the gas and steer straight without braking hard

When hydroplaning, ease off the accelerator, avoid hard braking, and steer straight. The tires need to regain contact with the road surface.

Question 18: What does a brown rectangular sign indicate on South Dakota highways?

Construction zones
Speed regulations
Hospital directions
Recreational or cultural points of interest (Correct answer)

Correct answer: Recreational or cultural points of interest

Brown signs direct travelers to recreational and cultural points of interest such as parks, campgrounds, historic sites, and scenic areas.

Question 19: In South Dakota, what does a white rectangular sign with "SPEED LIMIT" and a number indicate?

The maximum legal speed under ideal conditions (Correct answer)
The suggested speed
The average traffic speed
The minimum speed required

Correct answer: The maximum legal speed under ideal conditions

White rectangular regulatory signs display the maximum speed allowed. Drivers must not exceed this limit under normal conditions.

Question 20: If you are stopped by a South Dakota officer who suspects alcohol impairment, which field sobriety test is designed to check divided attention and balance?

The Walk-and-Turn test (Correct answer)
The recite-the-alphabet test
The finger-to-nose test
The Horizontal Gaze Nystagmus test

Correct answer: The Walk-and-Turn test

The Walk-and-Turn test requires the driver to walk heel-to-toe in a straight line and turn precisely, testing both balance and the ability to follow instructions simultaneously.

Question 21: In South Dakota, when must you yield to pedestrians?

Whenever pedestrians are in a marked or unmarked crosswalk (Correct answer)
Only at crosswalks with signals
Only when a crossing guard is present
Only at school crossings

Correct answer: Whenever pedestrians are in a marked or unmarked crosswalk

South Dakota law requires drivers to yield to pedestrians in crosswalks, whether marked or unmarked, giving them the right-of-way.

Question 22: In South Dakota, what is the safest action when approaching a curve?

Maintain highway speed
Accelerate through the curve
Slow down before entering the curve, then maintain steady speed through it (Correct answer)
Brake during the curve

Correct answer: Slow down before entering the curve, then maintain steady speed through it

Reduce speed before entering a curve. Braking in a curve can cause loss of traction, while accelerating may cause the vehicle to leave the road.

Question 23: What does a flashing yellow signal indicate at an intersection in South Dakota?

Stop and wait for green
Yield to all traffic
Proceed with caution (Correct answer)
The signal is malfunctioning

Correct answer: Proceed with caution

A flashing yellow signal means proceed with caution, being alert for cross traffic and pedestrians.

Question 24: When driving in fog in South Dakota, which headlight setting should you use?

High beams
Parking lights only
Hazard lights only
Low beams (Correct answer)

Correct answer: Low beams

Low beams should be used in fog because high beams reflect off fog particles and create glare that actually reduces visibility.

Question 25: In South Dakota, how far in advance must you signal before turning?

Signals are optional
At least 200 feet
At least 100 feet (Correct answer)
At least 50 feet

Correct answer: At least 100 feet

South Dakota law requires drivers to signal at least 100 feet before making a turn to give adequate notice to other road users.

South Dakota DMV Driver's License Knowledge Test

The South Dakota DMV Knowledge Test assesses a driver's knowledge of traffic laws, road signs, safe driving practices, and state vehicle regulations. Applicants must correctly answer 20 of 25 questions to pass and obtain a South Dakota driver's license.

Questions

30 min

Time Limit

80%

To Pass

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Exam Rules

You can skip questions and return to them later
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No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds