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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. How can you prevent fatigue on a long trip?
Get enough sleep.
Plan to drive long trips with a companion.
All of the above.
2. Roads are most slippery:
just before it rains.
when it first starts to rain.
when it stops raining.
3. This road sign means:
no u turn sign
No U-turn
Do not enter
Do not pass on the left.
4. If the entrance lane is too short to allow acceleration to highway speed, you should:
merge into highway traffic as soon as possible.
go to the next entrance ramp.
stop and wait for a large gap in traffic, then enter the highway and accelerate quickly.
5. This road sign means:
no u turn sign
Crossroads ahead
Railroad Warning
No U-Turn
6. Drivers should be aware that a motorcyclist may:
decrease speed and rise off the seat when approaching a railroad crossing.
quickly change speed or lane position.
All of the above.
7. At a school crossing, drivers should:
school crossing sign
watch for children and be ready to stop.
always stop, whether there’s a stop sign or not.
always sound their horn and stay alert.
8. This road sign means:
reduction of lanes sign
Highway entrance ramp ahead
Lane reduction - the right lane ends soon
Lane reduction - the left lane ends soon
9. A bad car suspension can cause:
vehicle control problems.
pumping brakes.
squealing brakes.
10. A broken white line:
means passing or crossing is prohibited in that lane.
separates two lanes traveling in the same direction.
marks the right edge of the roadway.
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SD DMV Knowledge Test

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