This paper provides striking confirmation of the restrictions of the structural gravity model of trade. Structural forces predicted by theory explain 95% of the variation of the fixed effects used to control for them in the recent gravity literature, fixed effects that in principle could reflect...

This paper develops and calibrates a model of downtown parking in a city without mass transit, and applies it to investigate downtown parking policy. There is curbside and garage parking and traffic congestion. Spatial competition between private parking garages determines the equilibrium garage...

This paper looks at parking policy in dense urban districts ("downtown"), where spatial competition between parking garages is a key feature. The paper has four parts. The first looks at the "parking garage operator's problem". The second derives the equilibrium in the parking garage market when...

This paper discusses uniqueness and efficiency of user equilibrium in transportation networks with heterogeneous commuters. Daganzo (1983, Transportation Science) proved the uniqueness of (stochastic) user equilibrium when commuters have heterogeneous tastes over possible paths but identical...

Consider an urban economy with two types of externalities, negative traffic congestion externalities and positive agglomeration externalities deriving from non-market interaction. Suppose that urban travel can be tolled, that non-market interaction cannot be subsidized, and that non-market...