Its headquarters and main workshop are located on the intersection of Perú and Carlos Pellegrini Avenues in the City of Mendoza.

[3] Today, the STM provides services in the departments of Capital, Godoy Cruz, Las Heras, Guaymallen and Maipú, using a wide variety of models.

With the commissioning of the new Mendotran transport system in 2019,[6] the STM received certain routes considered trunk and strategic for urban mobility in Greater Mendoza.

Works are also being carried out for the Metrotranvía to reach Luján de Cuyo and the Francisco Gabrielli Airport.

[7][8][9] On January 2, 2019, the Government of the province of Mendoza put into operation the new public transport system called Mendotran.

[10] With it, the STM went from a radial system to one where the buses connect the different areas of Greater Mendoza without passing through the city center.

[18] In late 2016, the Villa Nueva and Godoy Cruz–Las Heras routes were being operated by motorbuses due to a shortage of serviceable trolleybuses.