[OSM-talk] Roadside Distance Markers

Konrad Skeri konrad at skeri.com
Fri Oct 23 08:09:21 BST 2009

Calculating distance should be done by software by calculating and
adding length of segments (ways). No relation needed.
The signs however could be of navigational aid. E.g. "turn left into
the minor road 500 m after the sign saying 'Skara 14 km'". It could be
made to fit as an extension to the destination_sign relation [1],
although the name of the tags would be somewhat non-intuitive for this
purpose, and routing software would be saying "Continue on the road
towards XX" for each sign even though there is no intersection or

[1] http://wiki.openstreetmap.org/wiki/Relation:destination_sign


>> Hi Folks -
>> on a recent survey, I mapped some roads with modern km markers by the
>> side of the road. ?How should these be mapped - As a node within the
>> highway, or a separate single node to the side of the highway. ?And how
>> to tag these ?
>Wouldn't it be better to make a relation or something similar to
>indicate the start of the way and then mile markers can be calculated?

More information about the talk mailing list