Evaluating the European added value of TEN-T projects: a methodological proposal based on spatial spillovers, accessibility and GIS

This paper develops a methodology for calculating the European value added value (EVA) generated by transport infrastructure projects. This approach is particularly useful for evaluating projects in the framework of Trans-European Transport Networks (TEN-T), although it may also be used in trans-national projects in other geographical areas. The methodology is based on the appraisal of spatial spillovers generated by trans-national projects by using accessibility indicators (access to markets) and Geographical Information Systems (GIS). Projects are split into sections and spillover effects of each section are then computed. The sections that produce a high proportion of spillovers in relation to internal benefits generate a high EVA. Additionally, indicators are obtained of the effects of each section in terms of spatial concentration on the different countries affected, efficiency (general improvement in accessibility) and territorial cohesion (reduction in accessibility disparities between regions). The validity of this approach is verified by applying it to TEN-T priority project 25. This methodology does not seek to replace existing project appraisal methodologies (particularly the cost-benefit analysis); rather it provides complementary data for decision-making. Sections which are scarcely profitable from the cost-benefit analysis perspective but which have high European value added should receive more European funding than more profitable sections of markedly national interest.     

区域经济与区际交通耦合作用研究

经济联系的不足在一定程度上导致了区域间因经济发展而形成的摩擦和趋同现象,而运输联系通过各类运输方式的有效承载,可以降低这一空间差异、实现区域间的一体化。作为实现运输联系的唯一方式,区际交通成为促进区域经济协同发展的重要序参量。文章基于耦合与耦合度的基本概念,构建区域经济-区际交通耦合系统。围绕经济与交通两大子系统,建立相应的评价指标体系,并以欧盟为例,实现对区域经济与区际交通耦合发展过程的定量测算。研究结果发现,在泛欧交通网的作用下,欧盟经济及其交通的相互影响程度和协调程度在逐年提高。积极的交通政策,不仅使区域经济联系与运输联系更加紧密,还能进一步推动区域与区域之间、区域经济与区际交通之间乃至不同的交通运输方式之间的协调发展。