What factors must be considered to maintain separation after applying visual separation?

To maintain separation after applying visual separation, it is essential to consider the routes of flight. Visual separation involves ensuring that aircraft can safely navigate in a manner that they maintain sufficient distance from each other, primarily based on their visual observation. Understanding the routes of flight is crucial because if two aircraft are on crossing paths or are scheduled to navigate in close proximity, effective visual separation may not be feasible. The specified routes help controllers and pilots anticipate potential conflicts and ensure that both aircraft can maintain visual separation without entering a hazardous situation.

Considering routes also involves keeping track of possible altitude changes, airspace restrictions, and waypoint navigation that might affect how the aircraft conduct their operations visually. This makes routes a pivotal element in effective visual separation management.