Tender Announcement From: Adif - Presidency. Purpose: Drafting Of The Construction Project And Execution Of The Works For The New Installation Of Automatic Protection At The Level Crossings Located At Pp.Kk 126/665, 132/993, 139/458, 145/248, 152/920, 156/108 And 158/175 Of Line 790 La Asunción Universidad-Aranguren. File: 3.25/27506.0059.