Intersections and turns1 of 2
Under South Carolina law, how far in advance must a driver continuously signal before making a turn or lane change?
The answer
Answer: C. Turn signals must be given continuously for at least 100 feet (about one-fourth of an average city block) before reaching the intersection, making a turn, or changing travel lanes. Giving an advance signal provides trailing motorists and pedestrians adequate reaction time to adjust spacing and avoid rear-end collisions.
Source: SC Driver's Manual — Signals for Stops, Lane Changes and Turns (p. 83)