What is referred to as a route between two terminals within an ARTCC's area?

The concept referred to as a route between two terminals within an ARTCC's area is known as the Preferential Departure and Arrival Route (PDAR). PDARs are designed to provide a more efficient means of routing aircraft between specific departure and destination terminals while reducing congestion and optimizing air traffic flow. By utilizing PDARs, controllers can manage departures and arrivals in a structured manner, influencing the traffic patterns within the airspace to enhance safety and efficiency.

This routing strategy is beneficial because it allows for the establishment of preferred paths that can take into account various factors such as noise abatement procedures, terrain, and airspace constraints, ultimately facilitating better coordination within air traffic control operations.