SC DMV Permit SC DMV Permit 4 — Questions and Answers
Question 1: In South Carolina, what is the maximum speed limit on rural interstate highways?
- 55 mph
- 60 mph
- 70 mph (Correct answer)
- 75 mph
Correct answer: 70 mph
The maximum speed limit on rural interstate highways in South Carolina is 70 mph.
Question 2: A driver approaching a stopped school bus with flashing red lights on a two-lane road must:
- Slow to 15 mph and pass carefully
- Stop at least 20 feet away (Correct answer)
- Yield and then proceed
- Stop only if children are visible
Correct answer: Stop at least 20 feet away
Drivers must stop at least 20 feet from a school bus displaying flashing red lights.
Question 3: What is the primary purpose of anti-lock brakes (ABS)?
- To stop the vehicle faster on dry roads
- To prevent wheels from locking so steering control is maintained (Correct answer)
- To reduce brake wear in normal driving
- To automatically apply brakes on slippery roads
Correct answer: To prevent wheels from locking so steering control is maintained
ABS prevents the wheels from locking during hard braking, allowing the driver to maintain steering control.
Question 4: In SC, when must a driver yield to a pedestrian in a crosswalk?
- Only at marked crosswalks with a signal
- At all crosswalks, marked or unmarked (Correct answer)
- Only when a pedestrian has already stepped off the curb
- Only during school hours
Correct answer: At all crosswalks, marked or unmarked
South Carolina law requires drivers to yield to pedestrians at all crosswalks, whether marked or unmarked.
Question 5: When entering a highway from an on-ramp, you should:
- Stop at the end of the ramp and wait for a gap
- Yield to highway traffic and match their speed (Correct answer)
- Merge immediately regardless of traffic
- Use the shoulder to gain speed before merging
Correct answer: Yield to highway traffic and match their speed
Use the on-ramp to accelerate and match highway speed, then yield to existing traffic before merging.
Question 6: What does a red X signal above a highway lane mean?
- Use this lane only in emergencies
- This lane is closed — do not use it (Correct answer)
- Construction ahead in this lane
- HOV lane restriction in effect
Correct answer: This lane is closed — do not use it
A red X over a lane means the lane is closed and you must not drive in it.
Question 7: If you miss your exit on an interstate, you should:
- Stop and reverse on the shoulder
- Make a U-turn at the nearest crossover
- Continue to the next exit and return (Correct answer)
- Cut across the median carefully
Correct answer: Continue to the next exit and return
If you miss an exit, continue to the next exit — never back up or cross the median on an interstate.
SC DMV Permit SC DMV Permit 4
In South Carolina, what is the maximum speed limit on rural interstate highways?