Hello Everyone! Good afternoon! I'm working on a project that uses OpenStreetMap to do some routing. I'm using the OSRM router as a service.
We identified a problem with the routing, and the problem does not lie in the router itself. Some routes we try to execute in our software, go underground, into the PATH tunnels. When I try to route between two points inside the PATH, all goes well and the router does it's job just fine. When I'm above ground and try a route that goes underground a few things can happen: 1. OSRM gives me the car route and then traces a direct line to the point; 2. OSRM routes using the PATH; The second only happens when the PATH is connected to the street graph. So, we will be applying a two step routing, to the entrances of the PATH, and from there, to the underground locations, when necessary. When it's above ground > above ground, we'll just use a simple routing scheme. My questions are: 1. How are the entrances mapped? Is there any specific tag on OSM that marks them as entrances or that the level is changing (from 0 to -1, for example)? 2. All of these entrances should be connected to the main graph, otherwise they are unreachable from a street or a sidewalk. How can those be mapped? I'm sorry about the lengthy email, but I want to contribute and I do not want to step on any toes. Thanks -- George R. C. Silva Sigma Geosistemas LTDA ---------------------------- http://www.sigmageosistemas.com.br/
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