Classifying roads in central asia, it is easier, and makes more sense
in my opinion to use the highway ref in the administrative sense. Some
countries or regions have 5 or 6 main roads with are the national
trunk system. In places they are almost reduced to tracks through the
mountains, through which all traffic flows - it makes little sense to
mark then as a track though- physical attribute tags can do this, and
using dual carriage way technique when relevant. Many central asian
roads have fallen into disrepair in the last 20 years, but nonetheless
remain trunk roads. These roads are generally the object of
investment to improvement, so so will remain the principal highways,
but improved over time.
For example, the Chinese and Pakistani government are upgrading the
Karakorum highway from 10m to 30m, it's physical characteristics will
change, but the administrative classification and relative importance
is likely to remain the same. Anyone driving through Tajikistan will
not be expecting a German trunk highway service anyway!
James
Message: 5
Date: Fri, 31 Jul 2009 18:06:54 +0100
From: Richard Mann <[email protected]>
Subject: Re: [OSM-talk] definition of the main highway-tag
To: [email protected]
Cc: osm <[email protected]>
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Sometimes it's physical, sometimes administrative. Generally it's
administrative where that is clearly defined (ie the higher road
classes in
developed countries), and more physical when it isn't.
So saying either is correct wouldn't be entirely true.
Richard
Hi,
reading the English page for tag highway
http://wiki.openstreetmap.org/wiki/Key:highway and comparing it to
the
German version, I found some inconsistencies. Whilst I generally
would
have tried to transfer the English content to the German page, in
this
particular case I think that the German version is better.
The main definition in English is:
The '''highway tag''' is the primary tag used for highways. It is
often the only tag. It is a very general and sometimes vague
''description of the physical structure of the highway''.
This goes back to an edit from 27th Oct. 2007 (Etric Celine). Until
then (from March 06) there was just this: "Applying to feature type:
Physical ".
The German version defines:
"Das highway Tag ist das Haupt-tag f?r Stra?en. Oftmals ist es auch
das einzige Tag. Es ist recht allgemein und bestimmt in etwa die
Verkehrsbedeutung der Stra?e. "
(translates ~ "The tag highway is the primary tag for highways. Often
it is the only one. It is quite general and defines ~ the importance
of the road for the traffic"
There are then 2 examples to show the advantage of a physical
classification in respect to an administrative one (on the English
page, dating back to the same edit):
"Here are two examples where the highway tag differs from the legal
status:
Some roads in the UK that were legally classified as trunk roads
have been "detrunked" and are no longer designated by the government
as trunk roads. These roads should still have the tag highway=trunk.
/* This first example is valid for a classification according to the
importance as well, while the 2nd would result in different tagging:
*/
A road which is legally designated as trunk road has a section
where the road is not built to trunk standards, e.g. a single lane
with passing areas. The section that is not built to trunk standards
should be given a different value for highway other than trunk.
_____
If the highway-tag was the only tag on a road, I would agree with
this
approach, but as we are meanwhile tagging physical attributes as
supplementory tags (e.g. lanes, surface, traffic-lights), as we do
for
administrative classification (ref),
On 31 Jul 2009, at 18:25, [email protected] wrote:
wrote:
Hi,
reading the English page for tag highway
http://wiki.openstreetmap.org/wiki/Key:highway and comparing it to
the
German version, I found some inconsistencies. Whilst I generally
would
have tried to transfer the English content to the German page, in
this
particular case I think that the German version is better.
The main definition in English is:
The '''highway tag''' is the primary tag used for highways. It is
often the only tag. It is a very general and sometimes vague
''description of the physical structure of the highway''.
This goes back to an edit from 27th Oct. 2007 (Etric Celine). Until
then (from March 06) there was just this: "Applying to feature type:
Physical ".
The German version defines:
"Das highway Tag ist das Haupt-tag f?r Stra?en. Oftmals ist es auch
das einzige Tag. Es ist recht allgemein und bestimmt in etwa die
Verkehrsbedeutung der Stra?e. "
(translates ~ "The tag highway is the primary tag for highways.
Often
it is the only one. It is quite general and defines ~ the importance
of the road for the traffic"
There are then 2 examples to show the advantage of a physical
classification in respect to an administrative one (on the English
page, dating back to the same edit):
"Here are two examples where the highway tag differs from the
legal status:
Some roads in the UK that were legally classified as trunk roads
have been "detrunked" and are no longer designated by the government
as trunk roads. These roads should still have the tag highway=trunk.
/* This first example is valid for a classification according to the
importance as well, while the 2nd would result in different tagging:
*/
A road which is legally designated as trunk road has a section
where the road is not built to trunk standards, e.g. a single lane
with passing areas. The section that is not built to trunk standards
should be given a different value for highway other than trunk.
_____
If the highway-tag was the only tag on a road, I would agree with
this
approach, but as we are meanwhile tagging physical attributes as
supplementory tags (e.g. lanes, surface, traffic-lights), as we do
for
administrative classification (ref),
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