Installation, start-up and maintenance of the equipment for high voltage lines of 2,200 V, by CT. at every stop and in the tram interlocks of each segment. In the project of " Signposting, communications and helping system to the exploitation of the TR-4B the line 1 of FGV takes place a process of homogenization Within these works take place la construcción de los centros de transformación de los apeaderos de las estaciones del TRAM.