When must you signal by hand or signal device?

• A. Anytime you change lanes
• B. Before merging onto a highway
• C. Only when turning
• D. After you complete the maneuver

Answer: (C)

Signaling shows others what you plan to do, so they can adjust their driving. The key here is timing: you should activate your signal before you start the maneuver. When you’re turning, this means using your turn signal (or hand signal) in advance of beginning the turn so approaching drivers and pedestrians know which direction you’re going. Signaling after you’ve completed the turn doesn’t help anyone and can lead to surprises or collisions. While signaling is also important for changing lanes or merging, this item focuses on the moment you’re turning.