A lane change is a maneuver in which a driver moves their vehicle from one traffic lane to another. This can be done for various reasons, such as to avoid an obstacle on the road, to make room for another vehicle that wants to merge onto the highway or to prepare for an upcoming exit. Lane changes are typically made using turn signals and by signaling with hand gestures if necessary. It is important for drivers to use caution when making lane changes in order to avoid accidents and ensure safety on the road.