The South Bend Public Transportation Corporation (commonly known as Transpo) is a municipal bus system that serves the cities of South Bend and Mishawaka, as well as the nearby suburbs of Notre Dame and Roseland, in the very north of the U.S. state of Indiana.

TRANSPO is a hub-and-spoke system, with routes radiating from the center towards the outward corners of the metropolitan area.

In 2014, Transpo began converting the aging fleet to compressed natural gas (CNG) with the arrival of 14 New Flyer buses.

TRANSPO has 18 individual routes and 1 additional “Gameday Express” service for Notre Dame home games.

The fares are now the following:[8] University of Notre Dame, Saint Mary's College students, faculty and staff can ride for free provided they show a valid ID.

The station includes a 14,800 square foot (1,370 m2) building containing waiting areas, public restrooms, and other facilities.

[15][22][23] When it opened, South Street Station was solely a transfer center for local buses, with the Amtrak component planned to be built at a later date.

[19] Transpo had paid a firm in excess of $200,000 on design work for the Amtrak portion, with designs having the rail platform planned to be built on tracks located side of the rail embankment opposite from the bus depot.

A pedestrian tunnel would have been constructed beneath the rail embankment to connect the South Street Station passenger facilities with the platform.

However, plans were canceled after the railroad tracks owner (Norfolk Southern) refused to grant approval for its construction.

Norfolk Southern cited concerns that it would disrupt the operations of a busy nearby freight yard.

In 2004, Transpo general manager Mary McClain expressed her frustration with the railroad's refusal to compromise, calling their officials "not just uncooperative, but obstinate in their position.