How far in advance should you signal before turning?

• A. 100 feet
• B. 50 feet
• C. 200 feet
• D. 300 feet

Answer: (A)

Giving a turn signal early enough is essential so other drivers have time to notice your intent and adjust their speed or position accordingly. The standard minimum distance to signal before turning on most roads is 100 feet. At typical city speeds, that 100-foot warning translates to about two seconds, which provides a practical window for others to react—whether they’re in the lane you plan to change, approaching from behind, or waiting to merge. Signaling 50 feet is generally too short to give sufficient warning, while 200 or 300 feet isn’t the common minimum in many places and isn’t the standard tested in this context. If you’re driving at higher speeds or in tricky situations, signaling as early as reasonably possible still follows the same principle: give clear, timely notice to others before you turn.