How should you signal when changing lanes?

When changing lanes, it is important to give other drivers sufficient notice of your intention to merge. Signaling for at least 100 feet before merging is the correct approach because it ensures that those around you have adequate time to respond to your actions. This distance allows other drivers to adjust their speed or position if necessary, promoting safer lane changes and reducing the likelihood of accidents.

Using hand signals or signaling too late doesn't provide enough warning to other drivers. Extending your turn signal for less than 100 feet might not alert vehicles that are in your blind spots or those that are following closely behind, leading to potential unsafe situations. Therefore, using a turn signal at least 100 feet in advance is a best practice for maintaining safety on the road.