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Using SAS ® to Measure Airport Connectivity : An Application of Weighted Betweenness Centrality for the FAA National Plan of Integrated Airport Systems ( NPIAS )

The US Federal Aviation Administration (FAA) estimates that $52.2 billion will be available over the next five years (2011-2015) to fund airport infrastructure developments. Because one of the main objectives is to reduce congestion and delays, there is a need to acknowledge the importance of connectivity (measured with a centrality indicator) when establishing funding priorities. Currently, the FAA does not do this. In this paper, we expand an existing SAS/IML® implementation of betweenness centrality to handle passenger-weighted airport networks, construct a graphical representation of the US air transport network from airline ticketing data, test the module to identify hub airports, and produce stylish output using SAS® GMAP. Performance and complexity considerations of the new algorithm are addressed.