>Here proximity to to a train station is worth more money than proximity to a bus stop.Within 1 km of a train station is where developers and purchases of apartments want them and they will pay more for that proximity.
Train stations are usually well represented in OSM data.Bus stops are not so well represented, this will depend on the local mappers so it is area dependant. Perhaps I didn't state the problem clearly enough. If I have two possible sites for a health centre which will be more easily accessible? Assume the bus and tram stops are mapped and the route relationship is in place. Assume the same is true if it is rail. If the proposed sites for the health centre are not on the railway line then the rail is probably irrelevant. One method might be to plot a path from each building to the health centre by walking, car and bicycle then see how many can reach it within x minutes. That is a lot of routing calculation to do but it can be done overnight or even over a couple of days. You would then have to go through each travel plan and count the ones less than 10 minutes or 45 minutes or whatever time you decide is the cut off point. Google I think has travel times for public transport available on its maps under directions. I think for some cities we have the same information available, the GTFS file and locations but can we do travel times for public transport and how would you do it?. At the moment I don't think there is a good solution but someone might have some ideas on how to do it. Thanks John
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