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SD DMV Permit Test

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6. Any amount of alcohol in your blood may affect:

Your coordination.
Your judgment.
All of the above.

Explanation

Any amount of alcohol in your blood can affect your judgment, coordination, and reaction time. Alcohol impairs your ability to process information, make decisions, and respond to situations quickly. It also affects your balance and coordination, making it difficult to control the vehicle properly. Even small amounts of alcohol can have a negative impact on your driving ability, so it is important to always drive sober.

7. This road sign means:

Zoo ahead.
Cattle crossing.
Deer crossing.

Explanation

When you see a Deer Crossing sign, you should slow down and be alert, especially during fall when deer are more active. Deer can unexpectedly cross the road, especially during dusk and dawn, and they may travel in groups. If you spot a deer on or near the road, reduce your speed and sound the horn to scare them away. Be sure to look out for other deer that may be following the first one you see.

8. This road sign means:

Pavement ends.
Winding road.
Double curve ahead.

Explanation

The road sign indicates a winding road ahead. Winding roads are characterized by a series of turns or curves, which can be challenging for drivers to navigate. Sharp curves can limit visibility and increase the risk of collisions. The purpose of this warning sign is to prepare drivers for upcoming road conditions, and to encourage them to slow down and adjust their speed accordingly.

9. Drivers entering an interstate highway from an entrance ramp must:

Merge without looking.
Slow down.
Yield to traffic already on the highway.

Explanation

When entering an interstate highway from an entrance ramp, you must yield the right-of-way to traffic already on the highway. On the entrance ramp, you should check for a gap in the traffic that will allow you to merge safely. Once you see an opening in the main flow of traffic, use it to accelerate, and increase your speed to match that of vehicles already on the highway.

10. This sign warns you of:

A change in direction.
Narrowing of the road.
All of the above.

Explanation

The Chevron sign warns drivers of a sharp change in the direction of the road ahead, such as a sharp curve or bend. The arrows on the sign point in the direction of the curve, helping guide your steering and alerting you to adjust your speed. You may see multiple chevron signs posted in a row along the outside of a curve or leading up to a narrow bridge to give you extra warning and help you safely follow the roadway’s direction. Always reduce your speed and proceed with caution when you see them, especially in low visibility or slippery conditions.

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SD DMV Knowledge Test Key Info

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

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