I am carrying out a research on how complex city road networks get and I need to get accurate map information.
I started with openstreetmaps however I ran into a couple of issues: some of the dumps contain duplicate information - for example two ways which have the same name tag have distinct way ids and this skews my representation.
Moreover, when I converted their data into a graph, the graph was not connected, infact about 30% of the roads are not connected to the giant component. Could this be a mistake in my representation or something to do with openstreetmaps?
I have also tried dumps from the US geological survey however roads are split into segments without enough information to recombine them again. This makes it impossible to get full road information.
Can you help with road network data suggestions?