South Carolina DMV Permit Practice Test 2026：第4套练习测试

South Carolina DMV Permit Practice Test 练习测试第4套（共8套）：再练25道题，附答案和解释。

驾驶
南卡罗来纳州
205道题
核对于2026年10月10日

第1题，共25题
Compared with a sober driver, about how much more likely is a driver with a BAC of 0.08% to crash?
- About 20 times
- About the same
- About 4 times
- About 1.5 times
显示答案
答案: C. About 4 times
Drivers at a BAC of 0.08% are about four times more likely to crash than drivers with no alcohol.
第2题，共25题
A car in the lane next to you has stopped at a crosswalk. What should you do?
- Honk and pass
- Change lanes and speed up
- Stop as well, because a pedestrian may be crossing
- Pass it carefully
显示答案
答案: C. Stop as well, because a pedestrian may be crossing
Never pass a vehicle that has stopped at a crosswalk. A pedestrian you cannot see may be crossing in front of it.
第3题，共25题
What does it mean to overdrive your headlights?
- Driving with only parking lights on
- Driving so fast that you cannot stop within the distance your headlights show
- Using high beams near other cars
- Driving with one headlight out
显示答案
答案: B. Driving so fast that you cannot stop within the distance your headlights show
At night, drive at a speed that lets you stop within the area your headlights light up.
第4题，共25题
Orange signs like this one are used for:
- Parks and recreation areas
- School zones
- Work zones and other temporary traffic control
- Motorist services
显示答案
答案: C. Work zones and other temporary traffic control
Orange is the color for work zones. Expect lane changes, lower speeds and workers on or near the road.
第5题，共25题
How far should you sit from the air bag in the steering wheel?
- At least 3 feet
- As close as you can
- At least 10 inches
- At least 2 inches
显示答案
答案: C. At least 10 inches
Sit at least 10 inches from the air bag cover, as long as you can still control the vehicle safely.
第6题，共25题
A police officer directing traffic waves you through a red light. What should you do?
- Follow the officer's directions
- Turn right instead
- Honk to check that the officer means you
- Stay stopped until the light turns green
显示答案
答案: A. Follow the officer's directions
Directions from a police officer directing traffic override traffic lights, signs and pavement markings.
第7题，共25题
The speed limit is 55 mph, but there is thick fog and the road is slippery. How fast should you drive?
- Exactly 10 mph under the limit
- As fast as the cars around you
- Slower than 55 mph, at a speed that is safe for the conditions
- 55 mph, because that is the limit
显示答案
答案: C. Slower than 55 mph, at a speed that is safe for the conditions
The posted limit is the top speed for good conditions. You can be ticketed for driving too fast for conditions even below the limit.
第8题，共25题
What should you do when you see this sign?
- Turn right only on a green light
- Do not turn right; go straight or turn left if allowed
- Yield to vehicles turning right
- Turn right after a full stop
显示答案
答案: B. Do not turn right; go straight or turn left if allowed
The black arrow shows the move and the red circle and slash forbid it. You may not turn right at this intersection.
第9题，共25题
What does this sign mean?
- You must not drive into this road from where you are
- The road is closed to trucks only
- Stop, then enter when the way is clear
- One-way street; turn here
显示答案
答案: A. You must not drive into this road from where you are
This sign is posted where you would be going the wrong way, such as a freeway exit ramp or the end of a one-way street. Do not enter.
第10题，共25题
Your car breaks down on a highway. What should you do first?
- Turn on your hazard lights and pull as far off the road as you can
- Keep the lights off to save the battery
- Walk along the highway for help
- Stop in your lane and get out
显示答案
答案: A. Turn on your hazard lights and pull as far off the road as you can
Use your hazard flashers and get your car off the road if possible. Avoid stopping just over a hill or around a curve.
第11题，共25题
You stopped for a school bus with flashing red lights. When may you drive on?
- After waiting about 30 seconds
- When the bus driver honks
- As soon as you see the children on the sidewalk
- Only after the red lights stop flashing
显示答案
答案: D. Only after the red lights stop flashing
Stay stopped for as long as the red lights are flashing. Then watch for children before you move.
第12题，共25题
What does this sign mean?
- The road is closed ahead
- A railroad crossing is ahead
- A radar speed check is ahead
- A rest area is ahead
显示答案
答案: B. A railroad crossing is ahead
This round yellow sign is placed before a railroad crossing. Slow down, look and listen, and be ready to stop.
第13题，共25题
What should you do when you see this sign?
- Slow down before you reach the curve
- Brake hard in the middle of the curve
- Move to the left lane
- Speed up to get through the curve
显示答案
答案: A. Slow down before you reach the curve
Slow down before the curve, not in it. Braking hard in a curve can make you skid.
第14题，共25题
What does this sign mean?
- Detour to the right
- Right turns only
- Traffic on this street moves only in the direction of the arrow
- Keep to the right of the divider
显示答案
答案: C. Traffic on this street moves only in the direction of the arrow
Drive only in the direction of the arrow. You may not drive the other way on a one-way street.
第15题，共25题
At a stop sign with a white stop line painted across your lane, where should you stop?
- Before the stop line
- Inside the crosswalk
- With your front wheels past the line
- Past the line, at the edge of the cross street
显示答案
答案: A. Before the stop line
A stop line shows where you must stop. If there is no stop line, stop before the crosswalk.
第16题，共25题
What does a white diamond painted in a lane mean?
- The lane is for trucks only
- The lane is reserved for buses, carpools or other special vehicles
- There is a railroad crossing ahead
- The lane ends soon
显示答案
答案: B. The lane is reserved for buses, carpools or other special vehicles
A diamond marks a high-occupancy vehicle (HOV) or other reserved lane. Signs tell you who may use it and when.
第17题，共25题
What do green signs like this one show?
- Rules you must obey
- Places to get gas and food
- Directions and distances to places
- Road work ahead
显示答案
答案: C. Directions and distances to places
Green guide signs show routes, directions and distances in miles.
第18题，共25题
You are stopped at a red light and want to turn right, as shown. There is no sign about turning. What may you do?
- Turn right after a full stop, yielding to pedestrians and traffic
- Wait for the green light, because turns on red are never allowed
- Turn right without stopping if no one is coming
- Turn right into the farthest lane right away
显示答案
答案: A. Turn right after a full stop, yielding to pedestrians and traffic
Unless a sign or local rule forbids it, you may turn right on red after a full stop, when pedestrians and traffic are clear.
第19题，共25题
What should you do when you see this sign?
- Slow down and watch for deer, especially at dawn and dusk
- Turn off your headlights so deer are not blinded
- Honk your horn the whole time
- Swerve sharply if you see a deer
显示答案
答案: A. Slow down and watch for deer, especially at dawn and dusk
Deer are most active at dawn and dusk. If one appears, brake firmly and stay in your lane rather than swerving.
第20题，共25题
An angry driver makes rude gestures and shouts at you. What should you do?
- Stay calm, avoid eye contact, and do not respond
- Speed up to get in front of the driver
- Brake suddenly to teach the driver a lesson
- Gesture back
显示答案
答案: A. Stay calm, avoid eye contact, and do not respond
Do not challenge an aggressive driver. Stay calm, ignore the gestures, and give the driver space.
第21题，共25题
Which of these is an illegal place to park?
- In a marked space next to the curb
- On a residential street with no signs
- In an open space in a parking lot
- In a crosswalk
显示答案
答案: D. In a crosswalk
You may never park in a marked or unmarked crosswalk, because it blocks people who are crossing.
第22题，共25题
What does this sign mean?
- Stop only if other vehicles are near
- Come to a full stop, then go when it is safe
- Slow down and go if no one is coming
- Stop only when a police officer is present
显示答案
答案: B. Come to a full stop, then go when it is safe
A red octagon always means stop. Stop completely, yield to traffic and pedestrians, then go when it is safe.
第23题，共25题
The headlights of an oncoming car are blinding you. Where should you look?
- Straight into the headlights
- Down at your dashboard
- At the center line
- Toward the right edge of your lane
显示答案
答案: D. Toward the right edge of your lane
Look toward the right edge of the road until the car passes. Do not stare into the lights.
第24题，共25题
The school bus ahead of you turns on flashing yellow (amber) lights. What does this mean?
- The bus is getting ready to stop, so slow down and prepare to stop
- The bus has broken down
- You should pass the bus quickly
- The children have finished crossing
显示答案
答案: A. The bus is getting ready to stop, so slow down and prepare to stop
Flashing yellow lights on a school bus warn that it will soon stop and turn on its red lights.
第25题，共25题
If you double your speed, about how much longer does it take to stop once you brake?
- About the same distance
- About half as far
- About four times as far
- About twice as far
显示答案
答案: C. About four times as far
Braking distance grows with the square of speed, so doubling your speed makes it about four times longer.

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