You should signal for a left turn during the last 100 feet before the turn.

• A. Always signal during the last 100 feet
• B. Signal 200 feet before the turn
• C. Signal only after you begin the turn
• D. Do not signal

Answer: (A)

You must warn other drivers of your upcoming move before you actually start it, and the rule in this scenario is to use your turn signal in the last 100 feet before you turn. Activating the signal within that window gives drivers near you—the ones behind, in adjacent lanes, and approaching cross traffic—en enough time to react, slow or change lanes if needed, and coordinate with your turn safely. Signaling 200 feet before the turn is earlier than the required window and can still work, but the question emphasizes the last 100 feet as the critical interval. Signaling only after you begin the turn misses the opportunity to warn others and creates sudden, unexpected movements. Not signaling at all is unsafe and illegal.