TML is a public company owned by the Lisbon Metropolitan Area (AML), which comprises 18 municipalities, an area of 3.015 km² and a population of around 2.9M inhabitants. TML’s mission is to pursue its own intermunicipal competences and those delegated by 15 out of the 18 municipalities of the AML, in the fields of mobility and transport, having the power of transport authority, concerning the public passenger transport (PT) services.

TML has created and manages a dedicated information platform to the general public, through websites, apps, MaaS platforms, help desks, ticket selling points, and variable message panels, among others.