You should signal:

• A. At least 100 feet before you turn
• B. Only when other vehicles are nearby
• C. Immediately after you have completed the turn
• D. Never need to signal when you are sure no one is around

Answer: (A)

Communicating your intended movement to other road users is essential for safe driving. In California, you must signal at least 100 feet before you turn or change lanes. This advance notice gives drivers behind you time to slow down, adjust their position, or respond to your intended action, which reduces the chance of surprises and collisions. Signaling after you’ve completed the turn doesn’t warn others in time, and relying on the idea that no one is around is unsafe and illegal. You should signal every time you plan to turn or change lanes, regardless of how little traffic you think is present. The rule of signaling at least 100 feet before you turn is the correct practice.