A Conceptual Framework for Optimal Transportation Systems Planning with Integrated Supply and Demand Models

Frameworks for formulating models to determine optimal transportation systems operations or strategic plans are presented which integrate supply and demand characteristics. A conceptual model framework is also given for determining optimal transportation policies or regulations taking into account both supplier and user behavior. New formulations for single supplier problems are derived illustrated by the problem of determining optimal frequencies and fares for a public transit system. A carrier/shipper model in an oligopolistic market situation is presented as an illustration of the multiple carrier problem. Lastly, some algorithms are described which would appear to be tractable for large-scale problems.