The complexity of the current PT schema makes it close to impossible to creat or maintain this kind of data in India, where bus transport systems are a lot more complex, unstructured and dynamic.
I have found making bus frequency based renderings to be a lot more useful here [1], where the only data point required is the relative importance of a road in the bus route road network. What I do is pretty simple, consider default bus frequency to be function of highway classification ( trunk>primary>secondary ), tertiary and below are ignored. I override the default highway value if there is a public_transport tag. So a road with highway=trunk and public_transport=no is a highway with no bus service. [1] https://commons.wikimedia.org/wiki/File:Chennai_Openstreetmap_Public_Transport_Density_Map.png -- Arun Ganesh (planemad) <http://en.wikipedia.org/wiki/User:Planemad> <http://j.mp/ArunGanesh>
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