Which of the following is true about use of your turn signals?

You should never use both electric and hand signals.
If you signal for a lane change, other drivers must let you in.
You must always signal for lane changes.
You only need to signal in heavy traffic.
Explanation

You are required to use your turn signals before making any lane changes. Signaling alerts other drivers of your intentions, allowing them to react appropriately and helping to avoid accidents. Always use your turn signal before changing lanes, turning, or entering or exiting a highway.

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