ABSTRACT
Estimating the spatial economic impacts of transport infrastructure is an unsolved issue that has plagued economic science for a long time. The basic problem lies in establishing the anti monde, that is, the economic development that would have occurred without the investment in infrastructure. There is a large amount of literature on the economic impacts of infrastructure as well as a large variety of methods to estimate these impacts. It should be noted that micro surveys do not indicate which firms are indirectly influenced by the actions of the directly affected firms. First, one finds a series of general surveys with questions about the importance of all kinds of location factors including infrastructure accessibility. Macro production elasticities of infrastructure are found to vary considerably among the different studies. They sometimes have negative signs and often are not found to be significant.
