How many questions are on the South Dakota DMV written test?

South Dakota does not publish a figure we could verify against an official handbook, so the practice exam here uses a common 25-question format with 20 correct to pass. Check the South Dakota DMV before your appointment.

Is the South Dakota written test available in Spanish?

Most states offer the knowledge test in Spanish. Confirm with the South Dakota DMV, and practise in Spanish here.

Are these the real DMV questions?

No — and nobody who has them is allowed to publish them. Every question here is written from the official driver handbook and the federal MUTCD sign standard, which is what the real test is written from too.

Is this South Dakota practice test free?

Yes. Every question on this page is free, with no account and no email.

Where is a large truck's largest blind spot?

Along the right side, extending back several lanes

Immediately behind the trailer only

You are leaving a private driveway and entering a public road. Your obligation is to:

Yield to all traffic and pedestrians on the road and sidewalk

Proceed if you arrived at the edge first

Yield only to vehicles approaching from your left

Sound your horn and enter slowly

Parking is prohibited in front of a fire hydrant, on a crosswalk and within an intersection primarily because:

A parked vehicle there blocks emergency access or hides people from view

Those places are reserved for permit holders

The road surface is weaker there

They are reserved for commercial loading

Two solid white lines run side by side between your lane and the lane next to you. Crossing them is:

Allowed only in order to pass a slower vehicle

Allowed with care when changing lanes

Allowed, because white lines only separate traffic going in opposite directions

This sign is posted at the entrance to a paved way. What does it mean?

No motor vehicle of any kind may go beyond this point

Cars are prohibited, but motorcycles and mopeds may enter

Motor vehicles may enter but must give way to everyone already there

Motor vehicles may use the way during daylight hours only

You are approaching an intersection and can see the back of a sign facing the cross street. It is an octagon. What do you know about the traffic on that street?

They have a stop sign and must stop

They have a yield sign and may roll through

They have the right-of-way over you

The sign could be any regulatory message

You should signal a turn or lane change:

Well before the manoeuvre, so others can react

Only when another vehicle is nearby

After checking that the way is clear

When does the speed limit shown on this sign apply?

Only while the beacons on the sign are flashing

Only on days when school buses are operating

Only when you can see children near the road

A smaller sign is mounted directly beneath a larger one on the same post. How should that smaller sign be read?

As a plaque that modifies the sign above it and has no meaning on its own

As a separate rule that takes effect at the next intersection

As a restriction that applies only to trucks and buses

As a replacement for the sign above it wherever the two disagree

A school bus ahead of you stops and extends its stop arm with red lights flashing. You must:

Stop and remain stopped until the lights stop flashing and the arm folds in

Slow to 20 mph and pass carefully

Pass on the left if no children are visible

Stop only if children are crossing your side

You need to enter a destination into a navigation app during a journey. You should:

Pull over somewhere safe and stop before using it

Enter it while driving on a quiet straight road

Ask a passenger only if one is present

South Dakota DMV Practice Test 2026

Take a free South Dakota DMV practice test built on the state's real written exam: 25 questions, 20 correct to pass. Every answer explained. No sign-up.

General practice exam

25
Questions on the test: 20
Correct answers to pass: 5
Wrong answers allowed: 216
question bank

The real exam

This state's exact question count and passing score are not published in a form we could verify, so this is a general practice exam rather than a replica of the state test.

Questions on the test	25
Correct answers to pass	20
Wrong answers allowed	5
Time limit	None published

Practice questions

20 questions, answered right here. Tap an option to see why.

0 of 20 answeredScore: 0/2016 to pass

1.
Where is a large truck's largest blind spot?
Not quiteCorrect answer: B — Along the right side, extending back several lanes
The right-side blind spot is the biggest by far, covering more than one lane and much of the trailer length. If you cannot see the driver in their mirror, they cannot see you.
Drivers linger on a truck's right while passing, which is exactly the worst place and the reason for the mirror rule of thumb.
2.
You are leaving a private driveway and entering a public road. Your obligation is to:
Not quiteCorrect answer: D — Yield to all traffic and pedestrians on the road and sidewalk
A vehicle entering a roadway from a driveway, alley or parking lot yields to everything already there, including people on the footpath you cross.
The sidewalk is the part people forget. You cross it before you reach the road, and pedestrians on it have priority.
3.
Parking is prohibited in front of a fire hydrant, on a crosswalk and within an intersection primarily because:
Not quiteCorrect answer: D — A parked vehicle there blocks emergency access or hides people from view
Every one of these restrictions protects either an emergency response or a sightline. The exact distances differ by state; the reasons do not.
These are treated as revenue rules. Parking across a crosswalk pushes pedestrians into the traffic lane to get around you.
4.
Two solid white lines run side by side between your lane and the lane next to you. Crossing them is:
Not quiteCorrect answer: C — Not allowed at all
A double solid white line prohibits crossing entirely. It is used where a lane change is genuinely dangerous — separating an express lane, a toll approach, or a reserved lane from general traffic.
White is filed under "lines you may cross" and yellow under "lines you may not". Colour tells you the direction of traffic; it is solid versus broken that tells you whether you may cross.
5.
This round yellow sign means:
Not quiteCorrect answer: C — A railroad crossing is ahead
The circle is used for exactly one sign: the Grade Crossing Advance Warning. Seeing a round yellow sign means tracks are ahead and you should be ready to stop.
People often read the "RR" and think it marks the crossing itself. It is the advance warning; the crossing is marked by the white crossbuck.
6.
This sign is posted at the entrance to a paved way. What does it mean?
Not quiteCorrect answer: A — No motor vehicle of any kind may go beyond this point
The words NO MOTOR VEHICLES close that road or path to motorised traffic altogether, which is why the sign appears at trails, plazas and pedestrian streets. Walkers and cyclists are unaffected unless their own prohibition signs are posted.
Reading it as a restriction on cars only. The wording covers every motor vehicle, motorcycles and mopeds included.
7.
You are approaching an intersection and can see the back of a sign facing the cross street. It is an octagon. What do you know about the traffic on that street?
Not quiteCorrect answer: A — They have a stop sign and must stop
The octagon is reserved for one sign in the entire system: STOP. No other sign may use that outline, so the shape alone tells you the cross traffic must stop.
Some drivers assume shape only hints at a category. Six shapes — octagon, downward triangle, circle, pennant, pentagon and crossbuck — are locked to a single sign each.
8.
You should signal a turn or lane change:
Not quiteCorrect answer: C — Well before the manoeuvre, so others can react
A signal is a prediction, not a commentary. Most states specify a minimum distance; the underlying point is that it must arrive before you act.
Signalling and turning in the same motion gives following drivers no information they can use.
9.
When does the speed limit shown on this sign apply?
Not quiteCorrect answer: B — Only while the beacons on the sign are flashing
The WHEN FLASHING legend makes the lower limit conditional. The beacons are set to run during the periods when children arrive and leave, and the reduced limit is in force exactly while they flash; outside those periods the road's normal limit applies.
Waiting to see a child before slowing. The limit binds while the beacons flash whether or not anyone is in sight, and a child stepping out from between parked cars is the situation it exists for.
10.
A smaller sign is mounted directly beneath a larger one on the same post. How should that smaller sign be read?
Not quiteCorrect answer: A — As a plaque that modifies the sign above it and has no meaning on its own
A plaque never stands alone: it qualifies the sign it hangs under. ALL WAY under a STOP sign, FINES HIGHER under a speed limit, an advisory speed under a curve warning — each pair has to be read as a single message.
Reading the plaque as an instruction in its own right. On its own, wording such as FINES HIGHER or AHEAD tells you nothing about what to do.
11.
A school bus ahead of you stops and extends its stop arm with red lights flashing. You must:
Not quiteCorrect answer: C — Stop and remain stopped until the lights stop flashing and the arm folds in
Flashing red lights and an extended stop arm mean children are crossing. You stop until the signals are withdrawn, not until you personally see the road is clear.
Children cross in front of the bus where the driver cannot see them and you cannot either. "No children visible" is the condition in which they are struck.
12.
You need to enter a destination into a navigation app during a journey. You should:
Not quiteCorrect answer: C — Pull over somewhere safe and stop before using it
Programming a device takes eyes and attention off the road for many seconds. Stopping is the only version of this that is not a distraction offence.
A red light feels like free time, but the light changes and the vehicle behind expects you to move.
13.
What should you do when you see this round yellow sign?
Not quiteCorrect answer: B — Slow, look and listen for a train, and be ready to stop before the tracks ahead
The circle is reserved for advance warning of a railroad crossing. It is placed far enough back that you can start looking and listening while you still have the distance to stop short of the rails.
Expecting every crossing to announce a train with gates and lights. Many crossings carry only a crossbuck, so your own look down the track is the check that always works.
14.
This sign is mounted in the roadway itself at a crosswalk. It exists to:
Not quiteCorrect answer: D — Put the yield requirement directly in the driver's line of sight
Placing the sign in the lane rather than at the roadside is deliberate: a sign on a pole beside a busy street gets filtered out, one in the road does not.
Some drivers treat it as a temporary or decorative object. It carries a statutory yield requirement.
15.
Approaching a freeway exit, you see a triangular area marked with white chevrons between the through lanes and the ramp. You should:
Not quiteCorrect answer: C — Not drive on it — commit to the ramp before it, or stay in the through lane
This is the gore area. It separates two traffic streams and often has fixed objects just beyond it. Late exit decisions are made from it, and that is how they end badly.
It looks like spare pavement provided for exactly this hesitation. Missing the exit and continuing is always the safer option.
16.
Green signs on a highway are used for:
Not quiteCorrect answer: D — Directions, distances and destinations
Green is the guide colour: where a road goes, how far it is, and which exit to take. It never carries a legal requirement.
Because they are large and prominent, green signs get read as instructions. Nothing on a green sign can be violated.
17.
What does this symbol sign tell you?
Not quiteCorrect answer: B — You may not park here
The letter P inside a red circle with a diagonal slash is the symbol form of NO PARKING. The P on its own would point you towards parking; the red circle and slash reverse it into a prohibition.
Seeing the P and reading the sign as permission. On a regulatory sign the red slash always cancels the symbol underneath it.
18.
A school bus ahead has AMBER (yellow) lights flashing but the stop arm is not out. This means:
Not quiteCorrect answer: B — The bus is about to stop — prepare to stop behind it
Amber is the warning phase, like a yellow traffic light. It is your cue to slow and prepare, not the last chance to get past.
Treating amber as "still allowed" is exactly the behaviour that puts a car alongside the bus when the doors open.
19.
What does a bicycle symbol painted inside a marked lane at the edge of the roadway indicate?
Not quiteCorrect answer: A — A bike lane reserved for bicycles, which drivers must not travel in
A marked bike lane is a travel lane for bicycles. Drivers generally may enter it only to make a turn, and then must yield to cyclists already in it.
Drivers treat the bike lane as an extra right-turn or waiting lane. Merging into it before a turn is allowed in many states — but only after yielding.
20.
This sign appears on a two-way road. What should you be prepared to do?
Not quiteCorrect answer: D — Give way to oncoming traffic and stop if needed before using the single open lane
Both directions of travel have to share one lane through the work area, so the traffic alternates. A flagger or a pilot vehicle usually controls whose turn it is, and your turn may mean waiting.
Reading ONE LANE ROAD as one lane in each direction. It means one lane in total, used by traffic coming both ways.

Practice by topic

See all 84 road signs and what they mean

Questions people ask

How many questions are on the South Dakota DMV written test?: South Dakota does not publish a figure we could verify against an official handbook, so the practice exam here uses a common 25-question format with 20 correct to pass. Check the South Dakota DMV before your appointment.
What score do you need to pass in South Dakota?: 20 out of 25 — 80%.
Is the South Dakota written test available in Spanish?: Most states offer the knowledge test in Spanish. Confirm with the South Dakota DMV, and practise in Spanish here.
Are these the real DMV questions?: No — and nobody who has them is allowed to publish them. Every question here is written from the official driver handbook and the federal MUTCD sign standard, which is what the real test is written from too.
Is this South Dakota practice test free?: Yes. Every question on this page is free, with no account and no email.

Where this comes from

Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition — U.S. Federal Highway Administration
MUTCD sign artwork on Wikimedia Commons — Wikimedia Commons — files created by the U.S. Federal Highway Administration
California Driver Handbook — California DMV
Texas Driver Handbook — Texas Department of Public Safety
Florida Driver License Handbook — Florida HSMV
New York State Driver's Manual — New York State DMV
Illinois Rules of the Road — Illinois Secretary of State
Pennsylvania Driver's Manual — PennDOT

Independent study aid. Not affiliated with, endorsed by or connected to any Department of Motor Vehicles or government agency. Questions are written from the official handbooks listed above; no exam result is guaranteed.

The real exam

Practice questions

Where is a large truck's largest blind spot?

You are leaving a private driveway and entering a public road. Your obligation is to:

Parking is prohibited in front of a fire hydrant, on a crosswalk and within an intersection primarily because:

Two solid white lines run side by side between your lane and the lane next to you. Crossing them is:

This round yellow sign means:

This sign is posted at the entrance to a paved way. What does it mean?

You are approaching an intersection and can see the back of a sign facing the cross street. It is an octagon. What do you know about the traffic on that street?

You should signal a turn or lane change:

When does the speed limit shown on this sign apply?

A smaller sign is mounted directly beneath a larger one on the same post. How should that smaller sign be read?

A school bus ahead of you stops and extends its stop arm with red lights flashing. You must:

You need to enter a destination into a navigation app during a journey. You should:

What should you do when you see this round yellow sign?

This sign is mounted in the roadway itself at a crosswalk. It exists to:

Approaching a freeway exit, you see a triangular area marked with white chevrons between the through lanes and the ramp. You should:

Green signs on a highway are used for:

What does this symbol sign tell you?

A school bus ahead has AMBER (yellow) lights flashing but the stop arm is not out. This means:

What does a bicycle symbol painted inside a marked lane at the edge of the roadway indicate?

This sign appears on a two-way road. What should you be prepared to do?

Practice by topic

Questions people ask

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Where this comes from