Spatial Impact of Transportation Infrastructure: A Spatial Econometric Computable General Equilibrium Approach

This study introduces a new method called Spatial Econometric Computable General Equilibrium (SECGE) model, which integrates both spatial econometrics with computable general equilibrium modeling to improve the effectiveness of impact analysis on transportation infrastructure. Elasticities of factor substitution for the Constant Elasticity Substitution (CES) production function is estimated in spatial econometric models with consideration of spatial dependence. CGE simulations adopting different elasticities of factor substitution show a difference between spatial econometric estimation and traditional OLS estimation. Although the differences are relatively small in this aggregate case study, implications for more sensitive disaggregated regional models are clear.