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All residents who operate a motor vehicle on any South Dakota street or highway must have an South Dakota driver’s license or learner's permit. To obtain an instruction permit, you must be at least 14 years of age and pass the vision and knowledge test. The South Dakota written test covers the contents of the South Dakota Driver's Manual, and includes questions on safe driving practices, road rules, road signs and signals. The SD DMV knowledge test consists of 25 questions, and you must score 80% or higher (at least 20 correct answers) to pass. Practice with this sample DMV test to get ready for the official South Dakota written test.
1. Sudden wind gusts on highways:
can cause drivers to lose control of their vehicle.
are generally caused by dust and dirt blowing around.
only affect large vehicles.
2. You arrive at an intersection where you have a green light, but the path ahead is blocked. You should:
turn left and find another route.
enter the intersection and wait until traffic clears.
stay out of the intersection until traffic clears.
3. What should drivers do when the red lights begin to flash?
crossbuck sign red lights
Slow down.
4. What does a yellow arrow signal mean?
yellow arrow
The same as the yellow light, but applies only to movement in the direction of the arrow.
Vehicles moving in all directions must stop if they can. The light will soon be red.
The same as a green light.
5. Your license can be suspended if you are under 21 and drive with a BAC of:
0.08% or more.
0.15% or more.
any amount.
6. When passing another vehicle, you should:
drive at the same speed as the vehicle you are passing.
assume the other vehicle will maintain a constant speed.
check your mirrors and blind spots.
7. Drivers often fail to see a motorcycle headed toward them. Why?
Motorcycles are hard to see.
It is difficult to judge a motorcycle's speed.
All of the above.
8. The ‘Slower Traffic Keep Right’ sign is used:
in school zones.
at most intersections.
on multilane highways.
9. What does a flashing red light mean?
flashing red light
Drivers may move forward with caution.
The same thing as a stop sign.
10. This sign warns drivers that:
reduction of lanes sign
the road ahead is narrow.
there is a one lane bridge ahead.
the right lane ends.
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SD DMV Written Test Facts

Number of questions: 25
Correct answers to pass:20
Passing score:80%
Minimum age to apply: 14
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