atm I want to improove bicycle and pedestrian routing at and around our local university. East and west areas are full of bridges and stairs but that seems to be a straight-forward thing. But it is really confusing if you try to find your way through the complex in the center, even as a local.
The middle building complex is made of multiple levels of pedestrian areas connected by stairs or ways around and on top of a big parking structure. To get an impression, take a look at this picture from wikipedia.
What I did so far: I mapped the levels as separate, partly overlapping pedestrian areas as highway=pedestrian, area=yes with highway-pedestrian-ways inside of the areas for foot&cyclist routing. Ways and areas are tagged with level, starting with 0 at ground level. These ways can be seen on the humanitarian layer. The connecting stairs also have level-tags to address which levels they connect.
There is a bridge connecting another building complex from the north with a combination of these tags:
area=yes bridge=yes highway=pedestrian layer=1 level=1 man_made=bridge
This combination of tags, exept level, describes the situation there quite good. Basically the elevated pedestrian-areas are big bridges.
How can I elevate these pedestrian areas?
Adding height to the buildings there seems to be easy, someone already tagged a building in the notheast some time ago. Wiki now has two tags to describe the elevation, height and min_height. Can these also be used on the pedestrian-areas?
Does it make sense to also add the man_made=bridge tag to the pedestrian areas?
How can paths on top of buildings be mapped?
How can I elevate a bridge and tell the map, that one end of the bridge itself is connected to ground and the other one goes to the pedestrian-area?
The middle part of the building complex is, as said, building made for parking so it could be represented as a building. The actual way of describing the place would be a building the middle with a pedestrian-area that is bigger than the building itself on top.
Thanks for help and input!