What action is considered poor vehicle positioning during lane changes?

Changing lanes unnecessarily is considered poor vehicle positioning during lane changes because it can create confusion for other drivers and increase the risk of accidents. When a driver changes lanes without a valid reason—such as needing to overtake another vehicle or moving into a lane that is more suited for their intended direction—they can disrupt the flow of traffic. This action can lead to sudden braking, weaving, or collisions, particularly if other drivers are not expecting an unnecessary lane change. Proper lane changes should be purposeful and signal a clear intent to maneuver for safety and efficiency on the road.