What should be used to determine the greater distance for lateral separation?

The maximum specified in the table is the correct choice for determining the greater distance for lateral separation because it ensures that aircraft maintain a safe distance apart, reducing the risk of potential collisions or closeness that could compromise safety. Lateral separation is crucial in air traffic control as it helps in managing the safe navigation of multiple aircraft in the vicinity of each other.

By adhering to the maximum specified distance, controllers can account for variables such as different aircraft sizes, unexpected shifts in flight paths, and various operational conditions that could affect safe separation. This standardization allows for a consistent approach to maintaining adequate separation between aircraft on parallel or crossing flight paths.

Using an average or minimum distance could lead to reduced separation and increase the risk factors associated with close proximity between aircraft. The indicated distance from the flight plan may not always reflect the real-time operational scenario, making it less reliable for ensuring safe lateral separation. Thus, utilizing the maximum specified is essential for maintaining the highest level of safety in air traffic operations.