A Proposed Methodology for Measuring Accessibility Taking into Account Economic Relations and Dally Cycles
FIGUEIRA P and VIEGAS J, CESUR, Instituto Superior T~enieo, Portugal
The Portuguese coastal area is one of relatively few dense corridors in Europe outside the "blue banana" but it still is considered as a peripheral region. This is certainly due to the fact that it is located at the south-west extreme of Europe, and with
The Portuguese coastal area is one of relatively few dense corridors in Europe outside the "blue banana" but it still is considered as a peripheral region. This is certainly due to the fact that it is located at the south-west extreme of Europe, and with Madrid as the only really big conurbation located less than 800 Kms away.
In a period where location of many activities close to the end of the value-added production chain has to be made in places close to the markets, being peripheral means losing the chance to host such activities.
This paper presents a methodology for measuring the accessibility of Portuguese coastal regions in the Iberian context. We propose this to be done through analysis of accessibility at two levels for freight transport: demographic accessibility and economic accessibility.
At the first level a set of indicators is proposed for assessing accessibility from each basis region (in the Iberian Peninsula) to other regions (European regions), considering their populations as the measure of importance, and travel times between them as a (threshold) criteria for acceptability.
At the second level, economic accessibility is to be estimated. For each region taken as the basis of calculations, the model weights each other region (within an acceptable travel time range) on the basis of how complementary its economy is with respect to the one being analysed. This is measured through teeimical coefficients in input- output matrices, with separate calculations for imports and for exports.
It is well known that improved accessibility is only a potential for acceleration of economic growth, not a guarantee of such acceleration. This paper does not solve that difficulty, but tries to clarify the measurement of that added potential, based on two important factors: population as a whole in a "catchment area" and dimension of economic partnership possible in that area. However, as the required data for calculation of economic accessibility are not available, we only present results for the first dimension.
Association for European Transport