Services Of Pre-Project Summary Studies (Aps) Of Infrastructure, Civil Engineering, Engineering Structures, Tunnels, Railway Equipment, Railway Operation And Operating System Necessary: • For Doubleing And Rectification Of The Track Between Ain Dalia -Mechraa Bel Ksiri-Sidi Kacem, And The Brace Of Sidi Yahia-Mechraa Bel Ksiri; • Double The Track Between Melloussa And The Port Of Tangier Mediterranean; • At The Freight Bypass Between Ain Dalia And Melloussa.