[Routing] Using relations for interchange guidance/signposting

Frederik Ramm frederik at remote.org
Sun Nov 4 14:37:36 GMT 2007


Hi,

   I just thought it might make sense to have a relation that
describes what you have to do when changing from a certain way onto a
certain other way (specifically for motorway junctions). Something
like:

members:

from=way_a
onto=way_b
exit=node_c

tags:

type=road_change (or junction_guidance, or signposting, or....)
signpost=Bratislava (free text used in written directions - "follow
   signs to ...")

This is just a raw idea and might need some more thinking but I firmly
believe that there are junctions of a complexity that makes it
impossible to auto-generate good drivers's instructions from the road
layout data alone.

It somewhat encapsulates existing/proposed motorway exit tagging I
guess.

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00.09' E008°23.33'





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