This concluding paper discusses key aspects of the five research papers presented at this Roundtable in terms
of their policy applications. It notes problems concerning how policy makers make use of economic analysis
findings, and then summarizes the breadth of macro-, meso- and micro-economic methods in terms of their
predictive use for infrastructure assessment and planning. It then examines tradeoffs and limitations among
all the methods that affect their policy application, and it identifies directions needed to enhance the
applicability of future economic models for policy makers.
