[talk-au] [OSM-talk] maxheight/height

Liz edodd at billiau.net
Tue Jul 28 02:15:01 BST 2009

On Tue, 28 Jul 2009, Dirk-Lüder Kreie wrote:
> Liz schrieb:
> > To return to the bridge
> > the following attributes of the bridge and the road underneath it all
> > need to be considered
> > Height of bridge
> > Height above sea level of the bridge
> > Max height of the arch of the bridge above the roadway
> > Max height of a vehicle which can drive under the bridge, which if the
> > bridge is an arch must be less than the max height of the arch
> > Max height of a vehicle which the engineer said was permitted to drive
> > under the bridge
> >
> > so now I have 5 "height" measures
> > some of which belong to the road and some to the bridge, and some to
> > both.
> >
> > then we need unambiguous tags to refer to these 5 concepts and
> > translations of them all.
> >
> > :-)
> What about a max height of vehicles passing over the bridge? there are
> quite a lot of bridges which have support structures limiting he height
> of vehicles passing over it.
> how do you distinguish this, and how do you make it clear to every
> mapper what is what?
I'm happy to admit I've missed a 6th height measure
- missing possible scenarios is one of our problems in tagging.

This just came up on the talk_au where this discussion is running in parallel

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