The line connected Paço de Arcos with Oeiras Parque Shopping Center and consisted of 3 stations and 2 cars.

Oeiras is a satellite community and commuter town approximately 10 km (6.2 mi) west of Lisbon.

SATUOeiras was created as a partnership between Oeiras City Council and Teixeira Duarte with a 51% / 49% ownership structure respectively.

Teixeira Duarte, whose headquarters are in Oeiras, was interested in providing better transportation for its employees and connecting its offices in Lagoas Park with the heavily-used Cascais Line.

[1] Due to Portuguese laws that prohibit municipal assets to operate at a loss for three consecutive years, SATUOeiras was expected to close as early as 2014.

SATU's route had its southern terminus at Navegantes Station in the historic parish of Paço de Arcos.