Servicio de Transportes Urbanos y Suburbanos
Location:	Ciudad de Mexico, Mexico
Classification:	Street railway
Founded:
Predecessor(s):	Compania de Tranvias de Mexico[1945]
Successor(s):	Servicio de Transportes Electricos del Distrito Federal [1947,UNK]
Descr:
PNAER cars	Now: 0 [roster]    now/formerly owned:4 [roster]