some of the works made that contributed to the success of the express included 357 km of new rail tracks in santiago del estero province and josé león suárez in greater buenos aires, reparating and maintenance of rolling stock in rosario workshops, remodelation of hitachi coaches in junín workshops, brand new fiat-concord coaches acquired, remodelling of stations, level crossings, bridges, signalling, construction of new platforms, installation of a luggage belts in retiro, electronic signs in the main stations of the line (retiro, tucumán, rosario, la banda) indicating departures and arrivals of the trains and the opening of new ticket booths.