[OSM-talk] Changes to Key:access wiki page

[Aun Johnsen (via Webmail)]

On Sat, 22 Aug 2009 21:33:27 +0200 (CEST), Christiaan Welvaart
<cjw at daneel.dyndns.org> wrote:
> hi,
> 
> I changed some things on http://wiki.openstreetmap.org/wiki/Key:access - 
> only to document current (best) practices.
> 
> 
> * Transportation modes
> 
> (Note that 
> *=agricultural is not necessarily defined by this hierarchy, only tags 
> like agricultural=no.)
> 
Not all tags in access need everey value, in many cases when specifying,
yes/no/dedicated cover more than enough. Only the general access need this
variety of values. BTW I know of cases which could be tagged access=private
+ agriculture=yes + forestry=yes. Even more appropriate is hgv=no +
agriculture=yes, since many of these agricultural vehicles can have a max
weight far above 3.5 tonnes, I have myself maneuvered almost 10 tonnes
(tractor of 2 tonnes + cargo trailer of 0.5 tonnes + 5+ tonnes of cargo).
Some roads accessing farmland are actually signed with hgv=no.
> 
> Separated land (road), water, and rail based transportation because they 
> can be treated separately(?).
> 
I do not know enough about rail transport, but having only one subkey makes
it abit superflous. For additional keys for water transport, see my point
on the talk page. boat= should be a master key of motorboat= and sailboat=,
and add fishing_vessel= and ship= as master keys as well, all other values
suggested on the talk page are written hierchally under ship=

Yes, there is a big point in separating boats and ships, just as separating
mopeds and hgv.
> 
> * Direction specific restrictions
> 
IMO this does not belong on access, but rather on oneway= as they are
dictating special condition of the oneway key.
> 
> * Evaluating access tags
> 
There is a list of  national specific defaults of the access keys to
highway=, I do not remember where it was now, but think the page is linked
under 'See Also'
> 
>      Christiaan
> 
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-- 
Brgds
Aun Johnsen
via Webmail