South Carolina Permit Practice Test 3
A third full-length South Carolina practice test: 30 more questions with zero repeats from Tests 1 or 2 — including extra South Carolina-specific rules. You need 80% correct to pass the real SCDMV Knowledge Test.
Tap an answer. The explanation opens so you can learn it, then go on. Keyboard: A–D or 1–4 to answer, then Enter or Space.
Question 1 of 30
1. When do reduced school zone speed limits typically apply?
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Correct answer: D. School zone limits usually apply during posted times, when the zone's beacons flash, or whenever children are present. Kids are small, quick, and unpredictable near schools. When you see the zone active, drop your speed and cover the brake.
2. Can prescription or over-the-counter medicine make driving illegal, according to NHTSA?
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Correct answer: A. Official NHTSA drug-impaired-driving guidance says it’s illegal everywhere in America to drive under the influence of alcohol, marijuana, opioids, methamphetamines, or any potentially impairing drug–prescribed or over the counter.
3. At a railroad crossing you see a white X-shaped sign reading RAILROAD CROSSING, with no gates or flashing signals. How should you treat it?
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Correct answer: B. The crossbuck is a regulatory sign that legally works like a yield sign at the tracks. Trains cannot swerve or stop quickly, so you must give way every time. At passive crossings, your eyes and ears are the only warning system.
4. You are driving at night and can only make out the eight-sided outline of a sign ahead. Even before reading it, what does that shape tell you to do?
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Correct answer: C. The octagon is reserved for stop signs alone, so the shape itself orders a full stop. This lets you obey the sign even when snow, glare, or darkness hides the word. Eight sides always equals stop.
5. Until what age does NHTSA say to keep a child in the back seat?
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Correct answer: A. Official NHTSA car-seat guidance says Keep your child in the back seat at least through age 12. All children under 13 ride in the back seat for maximum safety. Rear-facing is required under age 1.
6. Unless a sign posts another limit, the usual residential or city default in South Carolina is:
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Correct answer: A. South Carolina's typical unposted residential / city default is 30 mph. School zones and work zones drop lower. If houses line the street and no sign argues, start at 30 mph and watch the next plaque.
7. You are comparing South Carolina with a neighboring state that uses 0.08%. For an adult driver in South Carolina, driving is a per-se offense at which BAC?
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Correct answer: A. Do not assume every state still uses the same adult number. In South Carolina the per-se line is 0.08%. Utah famously uses 0.05%; most others use 0.08%. Learn your own state's figure.
8. A person with a white cane is about to cross the street ahead of you. What must you do?
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Correct answer: A. A white cane or guide dog marks a pedestrian who is blind, and that person has the right-of-way every time. Stop if needed and do not honk, which can confuse them. White cane means your brakes, not your horn.
9. Your GPS routes you through a South Carolina neighborhood of homes and parked cars with no posted speed limit. State law caps your speed there at what value?
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Correct answer: D. State law gives unposted residential areas in South Carolina a default cap of 30 mph. Parked cars shrink your view of crossing pedestrians, which is exactly why the cap is low. Posted signs, where present, replace the default.
10. You merge onto an interstate in South Carolina posted at the state's maximum speed limit. The fastest you may legally drive there is which speed?
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Correct answer: C. South Carolina caps highway speed at 70 mph, its statewide maximum. Even on wide-open pavement, the posted number is the ceiling, and rain, fog, or traffic can make a much lower speed the only safe and legal choice.
11. In South Carolina, state law sets a default limit for residential districts that applies wherever no speed limit sign is posted. That default is which of the following?
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Correct answer: B. South Carolina law fixes the unposted residential default at 30 mph. Lawmakers keep it low because residential streets are full of crossings, parked cars, and pedestrians. Remember: no sign means the default applies, and posted signs override it.
12. If it becomes hard to control the car, what does Ready.gov tell you to do?
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Correct answer: A. Official Ready.gov car-safety guidance says If it becomes hard to control the car, pull over, stop the car and set the parking brake. The leftover pump-the-failed-brake list is not on that page; this nearby official loss-of-control sentence is.
13. You are passing a slow truck on a South Carolina highway posted at the state's maximum limit. Even while passing, your legal ceiling stays at which speed?
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Correct answer: B. Passing grants zero extra speed allowance; in South Carolina the ceiling on those top-posted highways stays 70 mph. If you cannot complete the pass within the limit, wait for a better gap. The limit binds every maneuver.
14. You are on an entrance ramp about to merge onto a freeway. Who is responsible for yielding?
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Correct answer: A. Drivers merging onto a freeway must yield to traffic already on it, using the ramp to match speed and slide into a gap. Through traffic cannot stop safely at highway speeds, so the entering driver adapts.
15. Outside urban districts, what speed limit applies on an ordinary two-lane paved South Carolina highway with no posted signs?
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Correct answer: A. When no signs say otherwise, South Carolina's paved highways outside urban districts default to 55 mph; only interstates and marked divided primaries allow more. A statewide default protects you where posting is sparse. No sign on pavement? Think 55.
16. The signal shows a green arrow for your left turn. What does having a 'protected' turn mean?
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Correct answer: B. A green arrow gives you a protected turn: conflicting traffic is held by a red signal. Still glance for people or vehicles already in the intersection, because protected means favored, not guaranteed safe.
17. Drivers under 21 in South Carolina are held to a stricter alcohol standard than adults. What is the BAC threshold for these younger drivers?
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Correct answer: B. Adults have a higher per-se number, but the under-21 standard in South Carolina is 0.02%. Alcohol is already off-limits for minors, so the driving rule matches: for young drivers, the practical limit is zero drinks.
18. Your South Carolina light is green, but pedestrians are still in the intersection. Who goes first?
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Correct answer: A. South Carolina tells you to yield the right-of-way to all pedestrians in the intersection even if the traffic light is green. Green means go only after the walk is clear. Gridlock and clipped pedestrians start when drivers nose in on green.
19. What does NHTSA say texting does to your eyes on the road?
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Correct answer: A. Official NHTSA distracted-driving guidance says Sending or reading a text takes your eyes off the road for 5 seconds. At 55 mph, that is like driving the length of an entire football field with your eyes closed. Distracted driving is any activity that diverts attention from driving.
20. A parent in South Carolina wants to start permit practice as soon as the law allows. The earliest learner's-permit age is:
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Correct answer: C. South Carolina opens the learner's-permit door at 15. Starting then, with a supervising adult, is how GDL is supposed to work. Younger than that, the answer is still wait.
21. A tire blows out at highway speed. What should you do first?
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Correct answer: B. A blowout pulls the car; your job is to keep it pointed straight while speed drops. Hard braking can spin you. Once you are slow and under control, signal and move off the pavement. Hold, ease, then brake.
22. An orange triangle with a red border is mounted on the back of a vehicle ahead. What is that vehicle doing?
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Correct answer: B. The slow-moving-vehicle emblem marks farm and other equipment that usually travels 25 mph or less. Give it a wide berth and pass only when you can see far enough ahead. Orange triangle equals slow vehicle.
23. You are parking near railroad tracks. What distance do most state manuals require from the nearest rail?
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Correct answer: C. Fifty feet from the nearest rail is the usual keep-clear distance so trains and crossing gates have room and drivers can see. Do not park on or immediately beside the tracks. Fifty for rails, thirty for signs, twenty for walks, fifteen for hydrants.
24. You are on a through street. A driver on a driveway to your right is waiting to enter. Who must yield?
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Correct answer: B. Drivers leaving a driveway, alley, or parking lot yield to all traffic on the street, including bikes and people walking. The street already has the flow. Think: entering traffic waits; through traffic keeps moving unless a sign says otherwise.
25. An orange sign with a black arrow reads DETOUR. What is this sign telling you?
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Correct answer: A. Detour signs guide you along a temporary route when the normal road is closed, often for construction or an emergency. Keep following the arrows until the detour ends, and the route will return you to your original road.
26. If you fail the South Carolina Knowledge Test, which statement matches the SCDMV's published retake rule?
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Correct answer: A. South Carolina's published retake rule is: The SCDMV publishes no waiting period for retaking a failed knowledge test. For the road (skills) test, you must wait two business days after a first failure, seven calendar days after a second, and 30 calendar days after a third or later failure, regardless of age or driving experience. Use the wait to restudy the handbook chapters you missed. Showing up unprepared a second time just spends another attempt.
27. What do open-container laws prohibit, according to NHTSA?
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Correct answer: A. Official NHTSA open-container guidance says Open container laws prohibit the possession of any open alcoholic beverage container and the consumption of any alcoholic beverage by motor vehicle drivers or passengers. Those laws typically exempt passengers in buses, taxis, and the living quarters of mobile homes.
28. A yellow diamond shows a bicycle and the words SHARE THE ROAD. What is it asking you to do?
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Correct answer: B. Share-the-road warnings remind you that bicyclists are legal traffic. Slow, wait for a clear gap, and pass with generous space. The sign exists because drivers otherwise squeeze bikes toward the gutter.
29. In South Carolina, what is the youngest age at which you can apply for a learner's permit?
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Correct answer: B. South Carolina issues learner's permits starting at age 15. The permit opens the first stage of graduated licensing, where you build skills with a supervising adult before earning fuller privileges. Know your state's number; it varies nationwide.
30. Before turning left across oncoming traffic, why should you look twice for motorcycles?
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Correct answer: A. A motorcycle's narrow profile fools your eyes: it looks farther away and slower than it really is. Many rider deaths happen when cars turn left across their path. Look twice and judge twice before you commit.
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