THE INTERVENTION CONSISTS IN DOUBLING THE "BARI S. ANDREA ' BITETTO" RAILWAY SECTION (10.5 KM), SITUATED ALONG THE "BARI ' TARANTO" ROUTE. THE BARI S. ANDREA ' BITETTO SECTION IS THE LAST SECTION NECESSARY FOR COMPLETING DOUBLING OF THE BARI-TARANTO LINE, DOUBLING INDISPENSABLE FOR FULL DEVELOPMENT OF RAIL TRANSPORT BOTH AT THE REGIONAL LEVEL AND AT THE LEVEL OF CONNECTION BETWEEN THE PRODUCTIVE AND COMMERCIAL AREAS OF APULIA AND CALABRIA AND THE REST OF EUROPE. THE INTERVENTION AS A WHOLE PURSUES, IN SYNTHESIS, THE FOLLOWING OBJECTIVES: 'VARIATION OF THE SPEED OF THE TRAINS (INCREASE OF THE MAXIMUM TRACK SPEED FROM 135 TO 150 KM/H) AND OF THE POTENTIAL CAPACITY OF THE NETWORK (FROM 80 TO 120 TRAINS/DAY); 'REDUCTION OF TRAVELLING TIMES CONSEQUENT TO THE INCREASE IN SPEED; 'ELEVATION OF THE PERFORMANCE STANDARDS (GAUGE LIMIT, AXLE WEIGHT, ELIMINATION OF CROSSING POINTS), 'UPGRADING, AND TECHNOLOGICAL MODERNIZATION AND HOMOGENIZATION OF THE LINE'.