wendorff at uni-paderborn.de
Thu Aug 26 21:25:40 BST 2010
I'm new to this list, so at first let me introduce myself in a few words.
I'm Peter and a student in computer science at the university of
Currently I write my bachelor thesis about navigation for the blind
based on OpenStreetmap data.
In that context I try to figure out how the openstreetmap database is
useful to give navigational instructions for blind and visually impaired
Therefore I tagged the campus of my university in more detail, adding
every sidewalk as dedicated geometry to the streets.
But at the moment there are two problems:
2) distinction between sidewalks and other footways
Everything I find to that topic in the wiki is dealing with the more or
less complex lane topic I would like to avoid for easier tagging.
My approach would be - and I would like to get your opinions on that:
- a sidewalk is tagged like every other footway
- renderers possibly render more than one name for one street. To solve
that a simple rule could be added to the rendering styles to avoid
naming of footway=sidewalk.
- a little bit error prone as redundant with name tags.
Pro arguments from my point of view:
- no geometric analysis necessary (finding parallel streets to unnamed
- simple to apply even without deeper knowledge of editors; could even
be given as training task for new mappers ;)
- existance of footways in the editor is obvious (in contrary to tagging
sidewalks as tags at the street)
Why not model sidewalks as lanes:
1) sidewalks and footways build a widely separated, dedicated network of
ways; that's a difference to lanes at the driveway
2) dedicated sidewalks make it a lot more simple to tag crossing details
like islands etc.
awaiting your comments
P.S.: No, i didn't wrote a proposal for that yet, but will do if it's
confirmed to be a good idea or to be able to become a good idea ;)
More information about the Tagging