The main socio-economic objectives of the projects are: - To improve the traffic efficiency through reduction of the travel time; - To improve transport efficiency through reduction of operation and maintenance costs (both for users and infrastructure operator); - To improve traffic safety; - To reduce environmental impact; - To improve accessibility. After both phases are going to be finalized, the project as an overrole will accomplish the general objectives of the program - Priority Axis 1 - Improving mobility by developing the TEN-T network and subway.