I want to self-host a reduced version of ORS with the following:
- Matrix, routing and isochrones.
- Car driving only. for which I need elevation.
I would like to reduce the size of the Europe PBF file to only contain the essential nodes/ways etc for routing, and only routing including the ability to cross border through ferry/shuttle routes.
Is this possible or should I systematically use an unalduterated version of the geofrabrik pbf file?
If yes what are the tags/nodes I need to retain to enable full routing capability?