TRB’s Airport Cooperative Research Program (ACRP) Synthesis 59: Integrating Airport Geographic Information System (GIS) Data with Public Agency GIS identifies effective and emerging data exchange practices that airports and public agencies can use to increase the data they have access to, while reducing the cost of identifying, collecting, and maintaining these data. It synthesizes the need expressed by airports and public agencies to exchange geographic information and related resources, highlighting effective practices and industry trends.