The organisational model of public transport is based on the identification of three large sections or levels, whose basic characteristics correspond to elements and functions laid down in the ISOTOPE project of the European Union, which examines the regulatory framework for public transport in large cities.
The participation of public transport in the corridor/axes varies greatly according to the capacity of the infrastructures and the demographic importance of the capital of the axis.
In this period the urban transport of the eighteen municipalities of the MTE was metropolitanised, as were the municipal companies Transports de Barcelona, S.A. and Ferrocarril Metropolità de Barcelona, S.A. The third period began with the creation of the MTA as a consortium of the Generalitat, Barcelona City Council and the MTE.
In Berlin, as the historical centre of Germany's rail network, the exhibition not only shows the history of these impressive machines - it also displays the everyday history of people who were involved in the railways as travellers, employees, shareholders and even as deportees.
In honour of its location at the former Anhalter freight station, the rail department of the Deutsches Technikmuseum Berlin was the first unit to be fully expanded and set up in 1987/88.
The "largest exhibit" of the museum is its historical locomotive shed complex dating back to 1874.