[OSM-talk] Permissive or Suggested

[Ben Robbins]

Sorry! I didn't see that reply. Heres my reply a bit late!

>The separate foot/horse/bicycle/car tags just seem to be the easiest way to 
>deal with the vast number of different permission combinations possible - 
>rather like having bits which can be set or unset, only with three/four 
>values (yes, no, permissive, private)

Having it posible to add accsess rules for everything individually is a good 
idea, because anything can be covered.  But as I have read many times in old 
osm stuff There should be predefined tags for commonly used things, and then 
a string of indivudally charactoristics so that people are free to discribe 
a way that  doesn't have a predefined state.  I almost never use the 
indivdual access tags as predefined other tags make it clear, and its easy 
to render them without having a long list of condisions.*

Permissive=footway
Highway=footway
Suggested=footway

This does seem strange because of the way I (and everyone) have been tagging 
for ages.  But then Highway to me seem like the group is stating that all 
the features under its name are of highway status, meaning they have the 
legal access rights of the following.  Therfore on the same principle a 
Permisiive group would mean that all the features under its name are of 
permissive status (again varying).  And the same for the rest.  In that 
sence it is more consitent with how the highway tag is mostly used.

The other problem I have with listing access for all the individual 'things' 
such as bicycles, is that its like turning a tag inside out.  If you state 
bikes, then what else should I tag, where should I stop?..unicycles, quads, 
inlines, skiies etcetc.  It seems silly, but then in just tagging it as a 
permiisive=footway, its clear exactly what is allowed in 1 tag.

>I guess I see your point there. I have tagged a whole range of things, from 
>an urban alleyway in Southampton, through paths in the New Forest, to a 
>route up a Scottish Munro

Yes, I remember talking to you about munros.  I have mapped town/city/rural, 
munros and the new forest also.   I think there are really 4 groups of these 
ways.

The highway ones (legal access),
The suggested ones (forestry commision areas or in Scotland or anyware else 
similar),
The Permissive ones (The ones people have allowed to go across there garden 
or something. The land off to one side of the path is not open.  Just the 
path)
And then the 4th wich I didn't mention before is the phisical ones, wich are 
in towns.  The average footway in a town has no real status, and the land is 
public, but there just a convience.

I havn't used the forth yet, as I havn't mapped urban areas in a while, but 
maybe at somepoint I shall

>I'm playing around with different rendering on free-map.org.uk/mapnik which 
>is aimed to provide OSM maps specialised for the countryside. At the moment 
>rights of way are red and "permissive" tracks are magenta - comments 
>welcome.

I currently render highways with colour, permiisive with dashed colour, and 
suggested as a desaturated variation of its highway equivelent.    I have 
done based on evaluations of how colour is mostly used within osmarender, 
and thourght about consistency in how colour/dahses or solid, and other 
aspects represent things.

Ben

* = (A simily would be me saying I want that >Mini Cooper< rather than me 
listing the entire spec of a car a I want, but at the same time I should be 
able to have a custom car built if I'm willing to state my exact requests, 
and someone is willing to make it!)  Preset should cover the mass, Custom 
build should be avaiable for the few.

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