Fig. 1

Schematic overview of the methods introduced in this paper. Both aspects of geometrical city modeling rely on GTFS timetable data, which is described in the "Data" section. The methodology for the computation of public transport orientations using sequences of single-layer networks is described in the "Methodology" section. Details on the construction of the multiplex network representation of urban public transport systems are given in the "Multiplex network model" section. The methodology for the determination of the centrality of stops and lines of the multiplex networks using matrix function-based centrality measures is presented in the sections “Definition” and “Numerical methods”