How should you signal a lane change?

Signaling a lane change is crucial for safety on the road, and using your turn signal at least 100 feet before making the change is the correct practice because it gives other drivers ample time to see your intention and react accordingly. This advance notice helps prevent accidents by clearly communicating your intended movement to those around you, including drivers who may be in a position to give way or adjust their speed.

In addition, using your turn signal is part of established traffic laws and safe driving practices, ensuring that you are following the expected behavior on the road. Other methods such as honking your horn or using hand signals are not standard practices for lane changes and can lead to misunderstandings or confusion among other drivers. Turning on your headlights is generally used in low visibility conditions and does not convey any intentions about changing lanes. Therefore, using your turn signal ahead of the lane change is the safest and most effective method to communicate your actions to fellow road users.