Signaling your intentions before turning or changing lanes:

Is necessary only if other traffic is present.
Is required by law, and is a safe driving habit.
Is not necessary if you are driving slowly.
Is necessary only during the maneuver, not before.
Explanation

Signaling your intentions before turning or changing lanes is required by law, and is a safe driving habit because it helps prevent accidents. When you use your turn signals, you are communicating your intentions to other drivers and giving them time to react. This is especially important when changing lanes or merging into traffic. Using your signals also helps to reduce confusion and prevent misunderstandings between drivers.

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