Indicator of energy efficiency applied to motorways. A first step: functional unit's LCA

The principal aim of the study consists of developing a methodology to calculate the energy associated with a motorway's complete life cycle, obtaining its energy footprint. Energy is consumad by the extraction of raw materials, production of materials, work, etc. and especially by vehicles passing through it. But it can also produce energy from renewable resources by taking advantage of the shoulders, placing solar panels on buildings to operate the motorway, re-using waste of deconstruction, etc. The objective is to evaluate the result of both energies (consumption and insumption) as the balance between the energy consumad through the process and the energy produced by the motorway at all stages of the life cycle (the energy footprint).