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A Multisectoral and Multiregional Transport Model for India—Data Base and Calibration Techniques

With the macroeconomic input-output model of the Planning Commission taken as a basis for spatial planning, this paper discusses methodology for regional allocation of national sectoral outputs and demands and construction and calibration of a transport model for India. Although national outputs are determined in the framework of an input-output model, regional supplies are estimated by shift and share technique and regional demands by regional input-output equations. Generation and distribution of traffic are determined by the doubly constrained gravity model of Wilson and modal splits are carried out on the basis of comparative advantages of different modes in terms of generalised cost. The paper also discusses data base and calibration techniques for the model and provides empirical results.