Why is changing lanes in an intersection considered potentially dangerous?

Changing lanes in an intersection is considered potentially dangerous primarily due to the creation of blind spots around the vehicle. When switching lanes, especially in an area with heavy traffic, a driver may not have full visibility of surrounding vehicles, pedestrians, or cyclists. The maneuver can hinder one's ability to assess whether it is safe to make the lane change. Blind spots can lead to collisions with hidden vehicles or pedestrians who may be crossing, making the act of changing lanes in such a setting particularly risky.

Moreover, the dynamics of traffic flow often change at intersections. Vehicles may be stopping or turning, and other drivers might not anticipate a lane change, further complicating safety. Thus, the combination of reduced visibility and unpredictable traffic behavior increases the likelihood of an accident when changing lanes in intersections.