[GraphHopper] Which tags influence the routing?

[Lukas Sommer]

Okay, I understand. (I suppose that “truck limitations” means all these
tags listed at http://wiki.openstreetmap.org/wiki/DE:Maxheight_Map like
maxweight, maxwidth and so on.)

One more question which is a little bit specific to Ivory Coast: Here, most
roads are very bad. While in residential zones, maxspeed=60 is correct
because this is the traffic roule, in reality you often can’t go faster
than 5 or 10 km/h because the ground is so bad. Is there any tagging
(beyond maxspeed) that reflects this?

Lukas Sommer


2014-06-17 8:56 GMT+00:00 graphhopper <graphhopper at gmx.de>:

>  Hello Lukas,
>
>  Thanks for the very fast response!
>
>    > (and so useful that it makes sense to add them to OSM).
>>
>>  What do you mean here?
>>
>>
>  It’s just that I was wondering which of these tags is worth to do all
> the work to add it to OSM when I map streets – and which isn’t so important
> because it doesn’t influence the routing.
>
>
> Ah, ok I see. So let me reformulate my answer a bit to make it more clear
> for other mappers as well.
>
> I think the most important thing is to add addresses especially in
> countries != Germany! Of course this has nothing to do with routing but we
> really need address search like pelias or photon/nominatim for routing.
>
> Besides addresses, I think indeed turn restrictions and truck limitations
> are the information which often absent. (But both of them are currently not
> taken into account from GH but will be this year probably.) Maxspeed is
> another candidate and last but not least there are many problems with
> oneways. I think they cannot be blind alleys but often they are. See the
> last discussion about 'not found' or this here:
>
> http://graphhopper-read-only-archive.1087335.n5.nabble.com/Issues-detecting-driving-paths-along-one-way-streets-td1002.html#a1003
>
> I can easily create a script for this issue to find out all nodes and ways
> with this problems world wide, if there is interest.
>
> Regards,
> Peter.
>
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>
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