Page 213 - 360.revista de Alta Velocidad - Nº 6
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Long Term Implications of HSR on Small cities: Ciudad Real and Puertollano revisited 25 years after
                   the arrival of the HSR



                       These  studies help  planners  to  envisage  the  long term  implications  of policies,  while  their
                   problem is that their internal rationale is based on ex-ante observations (regressions, etc.), but
                   no ex-post measurements.
                   Elaborated ex-ante studies on the implications of major new transport infrastructures have to
                   consider several aspects (Vickerman, 1994):
                   •  The uncertain impact of transport infrastructure since improvements in external connections
                       are usually two way, due to small contribution of transportation costs on total goods costs
                       (3-4%) and due to transport can clearly be substituted for other inputs.

                   •  The effects have to be considered on a multiregional basis.
                   •  The implications continue to depend on how individual decision-makers and policymakers
                       respond to the opportunities presented.
                   Thus, an added recommendation is to consider both objective (data) and subjective (policies,
                   strategies) analysis.
                   The few long-term ex-post studies frequently use comparative studies to explore the implications.
                   Berger & Enflo (No Date) explore Short- and Long-Term Impact of Railroads comparing cities that
                   gained access to the railroad network to cities that did not. Berger & Enflo (No Date) indicate
                   as additional precaution that has to be taken into consideration in these comparative studies,
                   that it is not straightforward to identify the impact of infrastructure, because investments
                   are typically allocated to already growing areas; thus comparisons have to ensure that they
                   include  growing cities  (with  transportation  demands)  and  not growing ones (without  much
                   transportation demand). Comparing cities that gained and not gained early access to railway
                   in Sweden, 1855-1870, Berger & Enflo (No Date) concluded that cities with early access to the
                   railroad network:

                   •  property values were higher, manufacturing employment increased, establishments were
                       larger, and more information was distributed through local post offices,  - continued to grow
                       faster for
                   •  a better part of the 20th century,

                   •  today are substantially larger compared to initially similar cities.


                   Combination of ex-ante and ex-post analysis to determine the influence of transport infrastructure
                   investment are starting to be used, although ex-post assessments are often performed only a
                   few years after complete implementation of projects, often 3 to 5 years (Griskeviciute-Geciene
                   & Lazauskaite, 2011). On top, ex-post analysis are frequently done in the form of Cost/Benefit
                   analyses concentrating on determination of direct effects having monetary values, such as the
                   reduction of travel time value, vehicle operating or infrastructure maintenance costs, without
                   determination of more wide scope of socioeconomic indirect effects (Griskeviciute-Geciene &
                   Lazauskaite, 2011). Best practices in several countries include direct and indirect aspects on
                   ex-post analyses (see Figure 3).

                   The optimum would be to combine along time three types of studies. First, ex-ante studies on
                   immediate and long-term expected effects. Second, ex-post studies shortly after infrastructure
                   operation on immediate measured effects, and compare them with the expected immediate
                   effects. And third, ex-post studies long after infrastructure operation on the long-term measured
                   effects, and compare them with the expected long-term effects and with the measured shortterm
                   ones. This will highlight the differences between expected and measured effects. This will also
                   allow to refine methodologies for ex-ante evaluations, by trying to deduct differences between
                   predefined rationales and realised rationales.



                   International Congress on High-speed Rail: Technologies and Long Term Impacts - Ciudad Real (Spain) - 25th anniversary Madrid-Sevilla corridor  211
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