It is the oldest line of the Sistema de Tren Eléctrico Urbano (SITEUR), or Urban Electric Train System in Guadalajara.

The construction of this line's road infrastructure began in 1974 and finished in 1976, with the intention of implementing a metropolitan and railway public transportation system in Guadalajara.

In 1982 an overpass was built at the intersection of Avenida Colón with the Calzada Lázaro Cárdenas and was completed in 1984 (for the extension of the Guadalajara trolleybus) towards Avenida Miguel López de Legaspi, and its pre-construction began in 1988, extending it from peripheral to peripheral, and it was completed in February 1989, to later be inaugurated in September of that same year.

The inauguration was headed by the then-governor of Jalisco, Guillermo Cosío Vidaurri, and by the former president of Mexico, Carlos Salinas de Gortari.

[1] Line 1 links the municipalities of Zapopan, Guadalajara and Tlaquepaque from north to south through the Calzada Federalismo/Avenida Cristóbal Colón.