South Carolina DMV Practice Test 1
Practice Test 1 covers the South Carolina SCDMV written knowledge test with a focus on South Carolina-specific rules — the SC BAC limit of 0.08%, the solid yellow next to broken yellow passing rule, hydroplaning definition, tire blowout response, bicycle passing clearance, animal suddenly entering the roadway, when to check before entering an intersection on green, and the complete range of South Carolina road signs. South Carolina's Grand Strand coastline, Blue Ridge foothills, Lowcountry marshes, and I-95 corridor create diverse driving scenarios.
Why Take This South Carolina Practice Test?
The South Carolina SCDMV written knowledge test has 30 questions and requires 80% to pass — you must answer at least 24 correctly. Practice Test 1 targets South Carolina's most directly tested rules — the SC BAC limit, solid-next-to-broken yellow, and hydroplaning definition.
Sample Questions from This Test
The questions below come directly from this test's question bank. Each is based on the official South Carolina Driver Handbook. See how many you can answer before starting — then take the full test above for answers and complete explanations.
- What blood alcohol concentration is illegal for drivers age 21 or older in South Carolina?
- What does a solid yellow line next to a broken yellow line mean?
- What is hydroplaning?
- What should a driver do if a tire blows out?
- What should a driver do if an animal suddenly enters the roadway?
Take the test above to see correct answers and read the full explanations for every question.
South Carolina SCDMV Topics Covered in This Test
Every question in this test is drawn from the official South Carolina Driver Handbook. Here is a breakdown of the specific topics covered:
- South Carolina BAC Limit — 0.08% for drivers 21 and older
- Solid-Next-to-Broken Yellow — driver on broken side may pass; solid side may not
- Hydroplaning Definition — tires ride on water film, losing road contact
- Tire Blowout Response — grip firmly, ease off gas, steer straight, slow gradually
- Bicycle Passing — give adequate clearance when passing a cyclist
- Animal on Roadway — brake firmly; do not swerve sharply
- Green Light Intersection Check — verify intersection is clear before entering
- SCDMV Roundabout Entry — yield to circulating traffic before entering
- Passing Prohibition — hills, curves, solid yellow on your side, no-passing zone
- Speed Limits Purpose — established for safe travel conditions
- Signal Before Turning — specific distance before the turn
- No-Passing Zone — passing prohibited in this area
- Orange Construction Signs — work zone or construction area ahead
- Fog Driving — low beams; reduce speed to visible stopping distance
- Rear-End Collision Cause — following too closely and inattention
South Carolina SCDMV Test — Key Facts
Knowing the specific numbers and rules before your South Carolina written knowledge test gives you a real advantage. Here are the key facts for this test:
- South Carolina SCDMV test: 30 questions, 80% required to pass (24 correct minimum)
- South Carolina BAC limit: 0.08% for drivers 21 and older — driving with this BAC or higher is a DUI in SC
- Solid-next-to-broken yellow in SC: Driver on broken side may pass when safe; driver on solid side may not
- Hydroplaning in South Carolina: Tires ride on water film and lose road contact — common on SC's frequently rain-soaked roads
- Animal on SC roadways: Deer, alligators (Lowcountry), and other wildlife are common — brake firmly, do not swerve
- SC roundabout entry: Growing throughout South Carolina communities — yield to all circulating traffic
How to Use This Test Effectively
Getting the most out of your South Carolina DMV practice time takes more than clicking through questions. Use these strategies:
- South Carolina's BAC limit is 0.08% for adult drivers. Driving with a blood alcohol concentration of 0.08% or higher is a DUI in South Carolina. This specific threshold is tested directly on the SCDMV exam.
- Solid-next-to-broken yellow in SC: the broken side may pass. If the broken yellow is next to your lane, you may pass when safe. If the solid yellow is next to your lane, you may not pass. This combination is common on South Carolina's two-lane rural roads.
- Hydroplaning on South Carolina's rain-soaked roads. South Carolina receives significant rainfall, especially along the Grand Strand and in the Lowcountry. Hydroplaning occurs when tires ride on a water film. Ease off the gas — do not brake hard.
- Animals on SC roadways: brake firmly, do not swerve. South Carolina's deer population, Lowcountry alligators near coastal roads, and other wildlife create frequent animal hazards. Brake firmly — do not swerve sharply on narrow SC roads.
- SC roundabout entry: yield to circulating traffic. Roundabouts are growing throughout South Carolina's communities. Always yield to vehicles already inside the roundabout before entering.
Frequently Asked Questions
How many questions are on the South Carolina SCDMV written knowledge test?
30 questions. You must answer at least 24 correctly (80%) to pass.
What is South Carolina's DUI BAC limit?
0.08% for drivers 21 and older. Driving with a BAC at or above 0.08% is a DUI in South Carolina.
What does solid yellow next to broken yellow mean in South Carolina?
The driver on the broken yellow side may pass when it is safe. The driver on the solid yellow side may not pass. Each direction of travel has a different rule at that location.
What is hydroplaning on a South Carolina road?
Hydroplaning occurs when tires ride on top of a thin film of water, losing contact with the road surface. When this happens, ease off the accelerator gently, steer straight, and let the vehicle slow naturally.
What should I do when an animal suddenly enters a South Carolina road?
Brake firmly and reduce speed as much as possible. Do not swerve sharply — especially on South Carolina's narrow rural roads and Lowcountry causeways where swerving can cause a rollover or head-on collision.
Complete Study Guide: All 50 Questions with Answers
All 50 questions from South Carolina Practice Test 1 are listed below with correct answers and explanations from the official South Carolina Driver's Manual. Pay close attention to the SC BAC limit, solid-next-to-broken yellow rule, and hydroplaning definition — these South Carolina-specific rules are tested directly on the real SCDMV written knowledge test.
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Q1. What does a flashing red traffic signal require a driver to do?
Correct answer: Come to a complete stop before proceeding
Why: A flashing red signal has the same meaning as a stop sign and requires a complete stop.
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Q2. At an intersection with no signs or signals, which vehicle has the right-of-way?
Correct answer: The vehicle approaching from the right
Why: Drivers must yield to vehicles approaching from the right at uncontrolled intersections.
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Q3. What does a solid yellow line next to a broken yellow line mean?
Correct answer: Passing is allowed only on the broken-line side
Why: Passing is permitted only when the broken yellow line is on your side.
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Q4. When are drivers required to use headlights?
Correct answer: From sunset to sunrise and when visibility is reduced
Why: Headlights must be used from sunset to sunrise and whenever visibility is limited.
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Q5. When must traffic stop for a school bus displaying flashing red lights?
Correct answer: Unless separated by a physical median
Why: Drivers must stop unless the roadway is separated by a physical median.
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Q6. What does a yellow diamond-shaped sign indicate?
Correct answer: A warning of road conditions or hazards
Why: Yellow diamond-shaped signs warn drivers of possible hazards ahead.
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Q7. What blood alcohol concentration is illegal for drivers age 21 or older?
Correct answer: 0.05 percent or higher
Why: Drivers age 21 or older are in violation of the law at a BAC of 0.05 percent or higher.
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Q8. What should a driver do if the vehicle begins to skid?
Correct answer: Steer in the direction you want the front of the vehicle to go
Why: Steering toward the desired direction helps regain control during a skid.
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Q9. What does a red octagon-shaped sign always mean?
Correct answer: Stop
Why: Red octagon-shaped signs are used only for stop signs.
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Q10. When is passing on the right permitted?
Correct answer: When the vehicle ahead is turning left
Why: Passing on the right is allowed when the vehicle ahead is making a left turn.
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Q11. What must a driver do before changing lanes?
Correct answer: Signal and make sure the movement can be made safely
Why: Drivers must signal and check that the lane change can be made safely.
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Q12. What action is required when approaching a railroad crossing with flashing lights?
Correct answer: Stop
Why: Flashing lights at railroad crossings require drivers to stop.
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Q13. What does a double solid yellow line indicate?
Correct answer: No passing in either direction
Why: Double solid yellow lines prohibit passing in both directions.
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Q14. What does a steady yellow traffic signal warn drivers of?
Correct answer: The signal is about to turn red
Why: A steady yellow signal warns that the light will soon turn red.
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Q15. Who has the right-of-way at a marked crosswalk?
Correct answer: Pedestrians
Why: Pedestrians have the right-of-way in marked crosswalks.
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Q16. Why are speed limits established?
Correct answer: To promote safety under normal driving conditions
Why: Speed limits are set to promote roadway safety.
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Q17. What must a driver do when an emergency vehicle approaches using lights and siren?
Correct answer: Pull to the right and stop
Why: Drivers must yield the right-of-way and stop for emergency vehicles.
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Q18. What does a broken yellow center line indicate?
Correct answer: Passing is allowed when safe
Why: A broken yellow line allows passing when it can be done safely.
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Q19. When is passing another vehicle prohibited?
Correct answer: At intersections and where visibility is limited
Why: Passing is prohibited where it could be dangerous due to limited visibility.
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Q20. How should an intersection be treated when traffic signals are not working?
Correct answer: As a four-way stop
Why: Drivers must treat intersections with non-working signals as four-way stops.
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Q21. What action is required at a yield sign?
Correct answer: Slow down and yield the right-of-way
Why: Yield signs require drivers to give the right-of-way when necessary.
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Q22. What does a green arrow traffic signal indicate?
Correct answer: A protected movement in the arrow direction
Why: A green arrow allows a driver to proceed without yielding.
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Q23. Which headlights should be used when driving in fog?
Correct answer: Low-beam headlights
Why: Low-beam headlights reduce glare and improve visibility in fog.
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Q24. What does a pentagon-shaped sign indicate?
Correct answer: A school zone or school crossing
Why: Pentagon-shaped signs warn drivers of school zones or crossings.
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Q25. What following distance is recommended under normal driving conditions?
Correct answer: At least two seconds
Why: A two-second following distance allows time to react safely.
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Q26. What should a driver do if a tire blows out?
Correct answer: Grip the steering wheel and slow down gradually
Why: Gradually slowing down helps maintain control after a tire blowout.
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Q27. What does a white rectangular sign usually indicate?
Correct answer: Traffic laws or regulations
Why: White rectangular signs provide regulatory information.
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Q28. When turning left at an intersection, a driver must yield to:
Correct answer: Oncoming traffic
Why: Drivers turning left must yield to oncoming vehicles.
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Q29. What is hydroplaning?
Correct answer: Loss of tire traction on wet pavement
Why: Hydroplaning occurs when tires lose contact with the road due to water.
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Q30. What should a driver do before entering a curve?
Correct answer: Reduce speed
Why: Reducing speed before a curve helps maintain control.
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Q31. What does a green traffic signal allow a driver to do?
Correct answer: Proceed when the intersection is clear
Why: Drivers may proceed on green only when the intersection is clear.
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Q32. What is required at a stop sign?
Correct answer: A complete stop
Why: Drivers must come to a complete stop at stop signs.
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Q33. What is a common cause of rear-end collisions?
Correct answer: Following too closely
Why: Following too closely reduces reaction time.
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Q34. What do orange traffic signs warn drivers about?
Correct answer: Construction or maintenance zones
Why: Orange signs are used to warn of work zones.
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Q35. How far before a turn should a driver signal?
Correct answer: At least 100 feet
Why: Turn signals must be given at least 100 feet before turning.
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Q36. What does a no-passing zone indicate?
Correct answer: Passing is prohibited
Why: No-passing zones prohibit overtaking other vehicles.
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Q37. When passing a bicyclist, a driver should:
Correct answer: Allow a safe amount of space
Why: Drivers must allow adequate space when passing bicyclists.
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Q38. What should a driver do when visibility is reduced by heavy rain?
Correct answer: Slow down
Why: Reduced visibility requires slower speeds.
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Q39. What does a flashing yellow traffic signal mean?
Correct answer: Proceed with caution
Why: Flashing yellow signals warn drivers to proceed carefully.
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Q40. When may a driver turn right on a red light?
Correct answer: After stopping and yielding if not prohibited
Why: Right turns on red are allowed after stopping unless signs prohibit it.
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Q41. What should a driver do if an animal suddenly enters the roadway?
Correct answer: Brake firmly if safe
Why: Controlled braking is safer than swerving.
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Q42. What does a railroad crossbuck sign require drivers to do?
Correct answer: Yield to trains
Why: Crossbuck signs require drivers to yield the right-of-way to trains.
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Q43. What does a white stop line at an intersection show?
Correct answer: Where vehicles must stop
Why: The stop line indicates the proper stopping point.
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Q44. When driving at night and facing oncoming high beams, what should a driver do?
Correct answer: Look toward the right edge of the road
Why: Looking toward the right edge helps reduce glare.
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Q45. What is the safest way to merge onto a highway?
Correct answer: Adjust speed to match traffic
Why: Matching the speed of traffic allows safer merging.
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Q46. What does a yellow center line separate?
Correct answer: Traffic moving in opposite directions
Why: Yellow center lines separate opposing traffic flows.
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Q47. What should a driver do when approaching a hill with limited visibility?
Correct answer: Reduce speed
Why: Limited visibility requires reduced speed.
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Q48. When are windshield wipers required to be used?
Correct answer: During rain or snow
Why: Windshield wipers must be used when rain or snow reduces visibility.
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Q49. What does a green circular sign indicate?
Correct answer: Permitted movement
Why: Green circular signs indicate permitted actions.
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Q50. Before entering an intersection on a green light, what should a driver do?
Correct answer: Make sure the intersection is clear
Why: Drivers must ensure the intersection is clear before proceeding.