[Talk-GB] Trunk vs green-sign routes in the UK

2013-04-22 Thread David Fisher
Hi,

This is kind of a tagging question, but is UK-specific and pretty
straightforward so I thought I'd post it here -- apologies  happy to
re-post if felt inappropriate.

I've noticed a couple of roads in the UK being downgraded in OSM from
trunk to primary on the basis that they are not trunk in the County
Council / DfT maintenance sense.  They are, however, green-sign primary
routes and are clearly of greater importance than your average white-sign
route.  The ones I've noticed are the A354 (Salisbury-Blandford) and A22
(Greater London boundary to E Grinstead).

Strictly speaking these changes are correct, as trunk in the UK implies
being run by the DfT rather than local councils (N.B. a large number of
former trunk routes have been devolved in the past 10 or 20 years).  But
the OSM Wiki says to use the trunk tag for primary A road (green
signs), and this would certainly make more sense from the road-user
perspective.  Is there a consensus on this?  If not, might it be a good
idea to introduce a new tag signifying a UK green-sign route, and for
these to be rendered as such in Mapnik (i.e. in green, the same as trunk
routes)?

Thanks,

David.
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Re: [Talk-GB] Trunk vs green-sign routes in the UK

2013-04-22 Thread Richard Mann
the wiki is the long-accepted approach: use highway=trunk for green signs -
ie the primary (sorry) route network


On Mon, Apr 22, 2013 at 2:44 PM, David Fisher djfishe...@gmail.com wrote:

 Hi,

 This is kind of a tagging question, but is UK-specific and pretty
 straightforward so I thought I'd post it here -- apologies  happy to
 re-post if felt inappropriate.

 I've noticed a couple of roads in the UK being downgraded in OSM from
 trunk to primary on the basis that they are not trunk in the County
 Council / DfT maintenance sense.  They are, however, green-sign primary
 routes and are clearly of greater importance than your average white-sign
 route.  The ones I've noticed are the A354 (Salisbury-Blandford) and A22
 (Greater London boundary to E Grinstead).

 Strictly speaking these changes are correct, as trunk in the UK implies
 being run by the DfT rather than local councils (N.B. a large number of
 former trunk routes have been devolved in the past 10 or 20 years).  But
 the OSM Wiki says to use the trunk tag for primary A road (green
 signs), and this would certainly make more sense from the road-user
 perspective.  Is there a consensus on this?  If not, might it be a good
 idea to introduce a new tag signifying a UK green-sign route, and for
 these to be rendered as such in Mapnik (i.e. in green, the same as trunk
 routes)?

 Thanks,

 David.




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Re: [Talk-GB] Trunk vs green-sign routes in the UK

2013-04-22 Thread Tom Hughes

On 22/04/13 14:44, David Fisher wrote:


I've noticed a couple of roads in the UK being downgraded in OSM from
trunk to primary on the basis that they are not trunk in the
County Council / DfT maintenance sense.  They are, however, green-sign
primary routes and are clearly of greater importance than your average
white-sign route.  The ones I've noticed are the A354
(Salisbury-Blandford) and A22 (Greater London boundary to E Grinstead).
Strictly speaking these changes are correct, as trunk in the UK
implies being run by the DfT rather than local councils (N.B. a large
number of former trunk routes have been devolved in the past 10 or 20
years).  But the OSM Wiki says to use the trunk tag for primary A
road (green signs), and this would certainly make more sense from the
road-user perspective.  Is there a consensus on this?  If not, might it
be a good idea to introduce a new tag signifying a UK green-sign
route, and for these to be rendered as such in Mapnik (i.e. in green,
the same as trunk routes)?


Yes, there has been a consensus for at least the last six and a bit 
years now that trunk in the OSM sense means green signed primary A 
road and primary means white signed secondary A road.


Which is why the wiki says what it does.

Tom

--
Tom Hughes (t...@compton.nu)
http://compton.nu/

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Re: [Talk-GB] Trunk vs green-sign routes in the UK

2013-04-22 Thread David Fisher
Ok.  So I guess I should message users Trubshaw (re A354) and UltimateKoopa
(re A22), then.
Thanks guys.



On Mon, Apr 22, 2013 at 2:57 PM, Tom Hughes t...@compton.nu wrote:

 On 22/04/13 14:44, David Fisher wrote:

  I've noticed a couple of roads in the UK being downgraded in OSM from
 trunk to primary on the basis that they are not trunk in the
 County Council / DfT maintenance sense.  They are, however, green-sign
 primary routes and are clearly of greater importance than your average
 white-sign route.  The ones I've noticed are the A354
 (Salisbury-Blandford) and A22 (Greater London boundary to E Grinstead).
 Strictly speaking these changes are correct, as trunk in the UK
 implies being run by the DfT rather than local councils (N.B. a large
 number of former trunk routes have been devolved in the past 10 or 20
 years).  But the OSM Wiki says to use the trunk tag for primary A
 road (green signs), and this would certainly make more sense from the
 road-user perspective.  Is there a consensus on this?  If not, might it
 be a good idea to introduce a new tag signifying a UK green-sign
 route, and for these to be rendered as such in Mapnik (i.e. in green,
 the same as trunk routes)?


 Yes, there has been a consensus for at least the last six and a bit years
 now that trunk in the OSM sense means green signed primary A road and
 primary means white signed secondary A road.

 Which is why the wiki says what it does.

 Tom

 --
 Tom Hughes (t...@compton.nu)
 http://compton.nu/

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Re: [Talk-GB] Trunk vs green-sign routes in the UK

2013-04-22 Thread Rob Nickerson
Yep, as others have noted, the Green Sign = Trunk Road is the age old
convention. If you want to add details about who maintains the road you can
use operator=Highways_Agency (the second highest use of the operator tag
apparently [1]). We don't have a tag for indicating that the signs are
green (hence it would be nice if people stick to the convention).

Regards,
Rob

[1] http://taginfo.openstreetmap.org/keys/operator#values
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