In transport analysis, we generally have several correlative explanatory variables when we want to explain the evolution of a factor. Therefore the quantification of the contribution of each variable in the evolution of our study object is often problematic. This problem is well known in...

The analysis presented in this paper is based on the database created by the UITP (International Association of Public Transport), "The Millennium Cities Database", which covers the public transport systems in 100 of the world's cities. It contains data on demography, urban structure, transport...