Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Richard Z.
Hi,

lots of the national wikis refer to bridge=humpback which is missing
in the English wiki, how to add it?

Also, should the key:bridge pages really encourage user defined bridge
values?

Richard

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Никита
I don't think so. Can you please define meaning of bridge=humpback?

PS. Tag covered=yes was proposed to mark covered ways. For example
covered bridges.
http://wiki.openstreetmap.org/wiki/Proposed_features/covered, from examples
section: http://www.travelbygps.com/special/covered/covered_bridge.JPG


2014-08-10 12:33 GMT+04:00 Richard Z. ricoz@gmail.com:

 Hi,

 lots of the national wikis refer to bridge=humpback which is missing
 in the English wiki, how to add it?

 Also, should the key:bridge pages really encourage user defined bridge
 values?

 Richard

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Richard Z.
On Sun, Aug 10, 2014 at 01:04:20PM +0400, Никита wrote:
 I don't think so. Can you please define meaning of bridge=humpback?

it was at least among the values of the German and French wiki and in the 
proposed values of the Russian and Ukrainian  wikis.


bridge=humpback — Bogenbrücke, bei der die Fahrbahn in einem Bogen geschwungen 
und immer Höher als die seitlichen Rampen ist. (auch moon bridge genannt) 

Pont dont la partie centrale est plus élevée que les extrémités

bridge=humpback Так называемый Горбатый мост. Обычно арочной 
конструкции. Такие мосты отличаются своей формой: они существенно выгнуты 
вверх. 

http://wiki.openstreetmap.org/w/images/thumb/3/3c/Bridge.bourton.750pix.jpg/100px-Bridge.bourton.750pix.jpg


Richard


 
 PS. Tag covered=yes was proposed to mark covered ways. For example
 covered bridges.
 http://wiki.openstreetmap.org/wiki/Proposed_features/covered, from examples
 section: http://www.travelbygps.com/special/covered/covered_bridge.JPG
 
 
 2014-08-10 12:33 GMT+04:00 Richard Z. ricoz@gmail.com:
 
  Hi,
 
  lots of the national wikis refer to bridge=humpback which is missing
  in the English wiki, how to add it?
 
  Also, should the key:bridge pages really encourage user defined bridge
  values?
 
  Richard
 
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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Никита
I.e they define this tag as subtype of
http://en.wikipedia.org/wiki/Arch_bridge. I don't see any real
application/use to bridge=humpback. Also, bridge=humpback does not imply
covered=yes by default. It does not define routing aspects or adds any
features to end users.

On other hand, bridge=movable have application in routing software (user
preferences).


2014-08-10 13:43 GMT+04:00 Richard Z. ricoz@gmail.com:

 On Sun, Aug 10, 2014 at 01:04:20PM +0400, Никита wrote:
  I don't think so. Can you please define meaning of bridge=humpback?

 it was at least among the values of the German and French wiki and in the
 proposed values of the Russian and Ukrainian  wikis.

 
 bridge=humpback — Bogenbrücke, bei der die Fahrbahn in einem Bogen
 geschwungen und immer Höher als die seitlichen Rampen ist. (auch moon
 bridge genannt)

 Pont dont la partie centrale est plus élevée que les extrémités

 bridge=humpback Так называемый Горбатый мост. Обычно арочной
 конструкции. Такие мосты отличаются своей формой: они существенно выгнуты
 вверх.


 http://wiki.openstreetmap.org/w/images/thumb/3/3c/Bridge.bourton.750pix.jpg/100px-Bridge.bourton.750pix.jpg
 

 Richard


 
  PS. Tag covered=yes was proposed to mark covered ways. For example
  covered bridges.
  http://wiki.openstreetmap.org/wiki/Proposed_features/covered, from
 examples
  section: http://www.travelbygps.com/special/covered/covered_bridge.JPG
 
 
  2014-08-10 12:33 GMT+04:00 Richard Z. ricoz@gmail.com:
 
   Hi,
  
   lots of the national wikis refer to bridge=humpback which is missing
   in the English wiki, how to add it?
  
   Also, should the key:bridge pages really encourage user defined bridge
   values?
  
   Richard
  
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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Colin Smale

On 2014-08-10 12:13, Никита wrote:

I.e they define this tag as subtype of 
http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real 
application/use to bridge=humpback. Also, bridge=humpback does not 
imply covered=yes by default. It does not define routing aspects or 
adds any features to end users.


In the UK there are warning signs for some humpback bridges, and with 
good reason - if you don't slow down substantially from the ambient 
speed you will be launched into orbit. Therefore they should be useful 
for routers, implying a lower speed on that part of the road.


https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP

Some are so humpy that a vehicle with a long gap between the axles 
and/or a low ground clearance (e.g. a low-loader) may actually be unable 
to cross the bridge.


So I don't think it is right to say that bridge=humpback cannot be of 
value for routing or end users...


--colin

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Yves
There is a lot of things not of interest to the majority of users in OSM, this 
is why it is rich.
Yves


On 10 août 2014 12:41:22 UTC+02:00, Colin Smale colin.sm...@xs4all.nl wrote:
On 2014-08-10 12:13, Никита wrote:

 I.e they define this tag as subtype of 
 http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real 
 application/use to bridge=humpback. Also, bridge=humpback does not 
 imply covered=yes by default. It does not define routing aspects or 
 adds any features to end users.

In the UK there are warning signs for some humpback bridges, and with 
good reason - if you don't slow down substantially from the ambient 
speed you will be launched into orbit. Therefore they should be useful 
for routers, implying a lower speed on that part of the road.

https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP

Some are so humpy that a vehicle with a long gap between the axles 
and/or a low ground clearance (e.g. a low-loader) may actually be
unable 
to cross the bridge.

So I don't think it is right to say that bridge=humpback cannot be of 
value for routing or end users...

--colin

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Никита
I'm fine with this tag being used in UK. But I care about it's definition.
If this tag will be interesting only in some territory, why not to define
this tag specific to UK? You didn't answer how we should define humpiness
of bridge?.. Is this you who minority and cannot pass this bridge without
speed reduction or it is me who can drive everywhere at regular speed? This
is really subjective.


2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com:

 There is a lot of things not of interest to the majority of users in OSM,
 this is why it is rich.
 Yves


 On 10 août 2014 12:41:22 UTC+02:00, Colin Smale colin.sm...@xs4all.nl
 wrote:

 On 2014-08-10 12:13, Никита wrote:

  I.e they define this tag as subtype of
  http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real
  application/use to bridge=humpback. Also, bridge=humpback does not
  imply covered=yes by default. It does not define routing aspects or
  adds any features to end users.


 In the UK there are warning signs for some humpback bridges, and with
 good reason - if you don't slow down substantially from the ambient
 speed you will be launched into orbit. Therefore they should be useful
 for routers, implying a lower speed on that part of the road.

 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP

 Some are so humpy that a vehicle with a long gap between the axles
 and/or a low ground clearance (e.g. a low-loader) may actually be unable
 to cross the bridge.

 So I don't think it is right to say that bridge=humpback cannot be of
 value for routing or end users...

 --colin

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Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread fly
Am 09.08.2014 18:06, schrieb Dave F.:
 Hi
 
 http://www.openstreetmap.org/#map=19/51.49428/-0.12149
 
 I've noticed highway=footway is being used as an area across Lambeth
 Bridge: North side as a closed polygon; South side within a relation.
 (checking the history previously they were both highway=pedestrian.
 
 I thought that tag should be used linearly only, as per the wiki page:
 http://wiki.openstreetmap.org/wiki/Footway
  areas should be highway=pedestrian. You'll notice though that mapnik
 renders them the same way. Is that part of the recent carto upgrade?
 
 To me, having two different tags (footway, pedestrian) to represent the
 same type of object is confusing, as is using the same tag (footway) to
 represent two different types of object.

Mmh, I tend to differ between an area signed as pedestrian and a square
without any sign or signs for foot, bicycle and other modes.

I also met highway=path + area=yes.

In general highway=pedestrian is often interpreted wrong, especially if
lots of special access condition are tag. At least for bicycle this is
less problematic if we are using path or footway.

Why do we use highway=pedestrians at all instead of footway or path as
long as it is not explicitly signed ?

Is there any problem with interpreting all three values with area=yes as
equal or maybe even consider them a bit different ?

cu fly


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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Colin Smale
 

No need to define it as UK-only... such bridges occur across the whole
world, I am sure. The UK may be unique by having a specific road sign,
which may indicate that a bridge could/should be tagged as a humpback
(as stated in the wiki[1]). There is also a sign for explicitly
indicating a risk of grounding often seen at railway crossings. 

In the UK it can be made objective by linking the use of the tag to the
presence of the sign, but then we would miss the many bridges which the
average person would call a hump bridge but are not signed as such. 

I would suggest something like a bridge requiring driving speed to be
reduced due to the vertical profile (i.e. not because it is narrow, or
some other attribute). 

Not sure this depends on who is driving by the way, the laws of dynamics
apply to all of us equally. But I agree that calculating whether a
particular truck can pass a particular bridge is not easy to put into
simple tags. It can be rather complex, which is why products like [2]
exist. 

--colin 

[1] http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom 

[2] http://www.autopath.co.uk/ 

On 2014-08-10 15:34, Никита wrote: 

 I'm fine with this tag being used in UK. But I care about it's definition. If 
 this tag will be interesting only in some territory, why not to define this 
 tag specific to UK? You didn't answer how we should define humpiness of 
 bridge?.. Is this you who minority and cannot pass this bridge without speed 
 reduction or it is me who can drive everywhere at regular speed? This is 
 really subjective. 
 
 2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com:
 
 There is a lot of things not of interest to the majority of users in OSM, 
 this is why it is rich.
 Yves
 
 On 10 août 2014 12:41:22 UTC+02:00, Colin Smale colin.sm...@xs4all.nl 
 wrote: 
 
 On 2014-08-10 12:13, Никита wrote:
 
 I.e they define this tag as subtype of 
 http://en.wikipedia.org/wiki/Arch_bridge [1] [5]. I don't see any real 
 application/use to bridge=humpback. Also, bridge=humpback does not 
 imply covered=yes by default. It does not define routing aspects or 
 adds any features to end users. 
 In the UK there are warning signs for some humpback bridges, and with 
 good reason - if you don't slow down substantially from the ambient 
 speed you will be launched into orbit. Therefore they should be useful 
 for routers, implying a lower speed on that part of the road.
 
 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP [2]
 
 Some are so humpy that a vehicle with a long gap between the axles 
 and/or a low ground clearance (e.g. a low-loader) may actually be unable 
 to cross the bridge.
 
 So I don't think it is right to say that bridge=humpback cannot be of 
 value for routing or end users...
 
 --colin
 
 -
 
 Tagging mailing list
 Tagging@openstreetmap.org
 https://lists.openstreetmap.org/listinfo/tagging [3]

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Links:
--
[1] http://en.wikipedia.org/wiki/Arch_bridge
[2]
https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
[3] https://lists.openstreetmap.org/listinfo/tagging
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Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread SomeoneElse

On 09/08/2014 17:06, Dave F. wrote:

Hi

http://www.openstreetmap.org/#map=19/51.49428/-0.12149

I've noticed highway=footway is being used as an area across Lambeth 
Bridge: North side as a closed polygon; South side within a relation. 
(checking the history previously they were both highway=pedestrian.


Regardless of whether it's mapped as a footway or as a pedestrian area 
it looks like a fairly extreme case of mapping for the renderer with no 
thought given to map usability.  If you look in the area of this node:


http://www.openstreetmap.org/node/2622468074

The data as it exists now suggests that there's no access west from this 
footway island to the pedestrian crossing across Millbank, or actually 
anywhere on the west bank of the Thames.  This pedestrian island 
functionally duplicates the real footway 
http://www.openstreetmap.org/way/256600109 (from which you can get north 
and south, though not west)


I'd be in favour of a similar linear / area split as there is with 
rivers = waterway=river - is the line of the river for e.g. routing 
purposes; waterway=riverbankthe outline of the bank which can be used 
for rendering but ignored for routing.


Cheers,
Andy


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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread fly
Can't we use traffic_calming=hump for this situation or some barrier=*?

cu fly

Am 10.08.2014 16:23, schrieb Colin Smale:
 No need to define it as UK-only... such bridges occur across the whole
 world, I am sure. The UK may be unique by having a specific road sign,
 which may indicate that a bridge could/should be tagged as a humpback
 (as stated in the wiki[1]). There is also a sign for explicitly
 indicating a risk of grounding often seen at railway crossings.
 
 In the UK it can be made objective by linking the use of the tag to the
 presence of the sign, but then we would miss the many bridges which the
 average person would call a hump bridge but are not signed as such.
 
 I would suggest something like a bridge requiring driving speed to be
 reduced due to the vertical profile (i.e. not because it is narrow, or
 some other attribute).
 
 Not sure this depends on who is driving by the way, the laws of dynamics
 apply to all of us equally. But I agree that calculating whether a
 particular truck can pass a particular bridge is not easy to put into
 simple tags. It can be rather complex, which is why products like [2] exist.
 
 --colin
 
 [1] http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom
 
 [2] http://www.autopath.co.uk/
 
  
 
  
 
 On 2014-08-10 15:34, Никита wrote:
 
 I'm fine with this tag being used in UK. But I care about it's
 definition. If this tag will be interesting only in some territory,
 why not to define this tag specific to UK? You didn't answer how we
 should define humpiness of bridge?.. Is this you who minority and
 cannot pass this bridge without speed reduction or it is me who can
 drive everywhere at regular speed? This is really subjective.


 2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com
 mailto:yve...@gmail.com:

 There is a lot of things not of interest to the majority of users
 in OSM, this is why it is rich.
 Yves


 On 10 août 2014 12:41:22 UTC+02:00, Colin Smale
 colin.sm...@xs4all.nl mailto:colin.sm...@xs4all.nl wrote:

 On 2014-08-10 12:13, Никита wrote:

 I.e they define this tag as subtype of
 http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see
 any real
 application/use to bridge=humpback. Also, bridge=humpback
 does not
 imply covered=yes by default. It does not define routing
 aspects or
 adds any features to end users.


 In the UK there are warning signs for some humpback bridges,
 and with
 good reason - if you don't slow down substantially from the
 ambient
 speed you will be launched into orbit. Therefore they should
 be useful
 for routers, implying a lower speed on that part of the road.

 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP

 Some are so humpy that a vehicle with a long gap between the
 axles
 and/or a low ground clearance (e.g. a low-loader) may actually
 be unable
 to cross the bridge.

 So I don't think it is right to say that bridge=humpback
 cannot be of
 value for routing or end users...

 --colin

 
 

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Никита
I will be fine with bridge=yes, traffic_calming=humpback. But again, as
Colin Smale said, we will miss unmarked bridges, without signs. barrier=*
is not option here, there no block in any form.


2014-08-10 19:52 GMT+04:00 fly lowfligh...@googlemail.com:

 Can't we use traffic_calming=hump for this situation or some barrier=*?

 cu fly

 Am 10.08.2014 16:23, schrieb Colin Smale:
  No need to define it as UK-only... such bridges occur across the whole
  world, I am sure. The UK may be unique by having a specific road sign,
  which may indicate that a bridge could/should be tagged as a humpback
  (as stated in the wiki[1]). There is also a sign for explicitly
  indicating a risk of grounding often seen at railway crossings.
 
  In the UK it can be made objective by linking the use of the tag to the
  presence of the sign, but then we would miss the many bridges which the
  average person would call a hump bridge but are not signed as such.
 
  I would suggest something like a bridge requiring driving speed to be
  reduced due to the vertical profile (i.e. not because it is narrow, or
  some other attribute).
 
  Not sure this depends on who is driving by the way, the laws of dynamics
  apply to all of us equally. But I agree that calculating whether a
  particular truck can pass a particular bridge is not easy to put into
  simple tags. It can be rather complex, which is why products like [2]
 exist.
 
  --colin
 
  [1] http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom
 
  [2] http://www.autopath.co.uk/
 
 
 
 
 
  On 2014-08-10 15:34, Никита wrote:
 
  I'm fine with this tag being used in UK. But I care about it's
  definition. If this tag will be interesting only in some territory,
  why not to define this tag specific to UK? You didn't answer how we
  should define humpiness of bridge?.. Is this you who minority and
  cannot pass this bridge without speed reduction or it is me who can
  drive everywhere at regular speed? This is really subjective.
 
 
  2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com
  mailto:yve...@gmail.com:
 
  There is a lot of things not of interest to the majority of users
  in OSM, this is why it is rich.
  Yves
 
 
  On 10 août 2014 12:41:22 UTC+02:00, Colin Smale
  colin.sm...@xs4all.nl mailto:colin.sm...@xs4all.nl wrote:
 
  On 2014-08-10 12:13, Никита wrote:
 
  I.e they define this tag as subtype of
  http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see
  any real
  application/use to bridge=humpback. Also, bridge=humpback
  does not
  imply covered=yes by default. It does not define routing
  aspects or
  adds any features to end users.
 
 
  In the UK there are warning signs for some humpback bridges,
  and with
  good reason - if you don't slow down substantially from the
  ambient
  speed you will be launched into orbit. Therefore they should
  be useful
  for routers, implying a lower speed on that part of the road.
 
 
 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
 
  Some are so humpy that a vehicle with a long gap between the
  axles
  and/or a low ground clearance (e.g. a low-loader) may actually
  be unable
  to cross the bridge.
 
  So I don't think it is right to say that bridge=humpback
  cannot be of
  value for routing or end users...
 
  --colin
 
 
 
 
  Tagging mailing list
  Tagging@openstreetmap.org mailto:Tagging@openstreetmap.org
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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Colin Smale
 

It is neither constructed with the intention of calming traffic, nor is
it intended as any kind of barrier (a bridge is usually exactly the
opposite!) Let us not be afraid of using a different tag for what is
clearly a different attribute. 

--colin 

On 2014-08-10 17:52, fly wrote: 

 Can't we use traffic_calming=hump for this situation or some barrier=*?
 
 cu fly
 
 Am 10.08.2014 16:23, schrieb Colin Smale:
 No need to define it as UK-only... such bridges occur across the whole world, 
 I am sure. The UK may be unique by having a specific road sign, which may 
 indicate that a bridge could/should be tagged as a humpback (as stated in the 
 wiki[1 [1]]). There is also a sign for explicitly indicating a risk of 
 grounding often seen at railway crossings. In the UK it can be made 
 objective by linking the use of the tag to the presence of the sign, but then 
 we would miss the many bridges which the average person would call a hump 
 bridge but are not signed as such. I would suggest something like a bridge 
 requiring driving speed to be reduced due to the vertical profile (i.e. not 
 because it is narrow, or some other attribute). Not sure this depends on who 
 is driving by the way, the laws of dynamics apply to all of us equally. But I 
 agree that calculating whether a particular truck can pass a particular 
 bridge is not easy to put into simple tags. It can be rather complex, which 
 is why products
like [2 [2]] exist. --colin [1] 
http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom [1] [2] 
http://www.autopath.co.uk/ [2] On 2014-08-10 15:34, Никита wrote: I'm fine with 
this tag being used in UK. But I care about it's definition. If this tag will 
be interesting only in some territory, why not to define this tag specific to 
UK? You didn't answer how we should define humpiness of bridge?.. Is this you 
who minority and cannot pass this bridge without speed reduction or it is me 
who can drive everywhere at regular speed? This is really subjective. 
2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com mailto:yve...@gmail.com: 
There is a lot of things not of interest to the majority of users in OSM, this 
is why it is rich. Yves On 10 août 2014 12:41:22 UTC+02:00, Colin Smale 
colin.sm...@xs4all.nl mailto:colin.sm...@xs4all.nl wrote: On 2014-08-10 
12:13, Никита wrote: I.e they define this tag as subtype of 
http://en.wikipedia.org/wiki/Arch_bridge [3] [5].
I don't see any real application/use to bridge=humpback. Also, bridge=humpback 
does not imply covered=yes by default. It does not define routing aspects or 
adds any features to end users. In the UK there are warning signs for some 
humpback bridges, and with good reason - if you don't slow down substantially 
from the ambient speed you will be launched into orbit. Therefore they should 
be useful for routers, implying a lower speed on that part of the road. 
https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP [4] Some 
are so humpy that a vehicle with a long gap between the axles and/or a low 
ground clearance (e.g. a low-loader) may actually be unable to cross the 
bridge. So I don't think it is right to say that bridge=humpback cannot be of 
value for routing or end users... --colin 
 
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mailto:Tagging@openstreetmap.org
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[2] http://www.autopath.co.uk/
[3] http://en.wikipedia.org/wiki/Arch_bridge
[4]
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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Никита
Yeah, traffic_calming was bad idea too, we use it for artificial objects
with purpose of calming traffic.

Back to the topic: a bridge requiring driving speed to be reduced due to
the vertical profile (i.e. not because it is narrow, or some other
attribute). Is okay definition, but we must add reference for not-UK users
that there specific road sign for this in UK. Mappers should only apply
this tag if there risk for some category of drivers and not just any bridge
with varying attitude. So be it.


2014-08-10 20:14 GMT+04:00 Colin Smale colin.sm...@xs4all.nl:

  It is neither constructed with the intention of calming traffic, nor is
 it intended as any kind of barrier (a bridge is usually exactly the
 opposite!) Let us not be afraid of using a different tag for what is
 clearly a different attribute.

 --colin


 On 2014-08-10 17:52, fly wrote:

 Can't we use traffic_calming=hump for this situation or some barrier=*?

 cu fly

 Am 10.08.2014 16:23, schrieb Colin Smale:

 No need to define it as UK-only... such bridges occur across the whole
 world, I am sure. The UK may be unique by having a specific road sign,
 which may indicate that a bridge could/should be tagged as a humpback (as
 stated in the wiki[1
 http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom]).
 There is also a sign for explicitly indicating a risk of grounding often
 seen at railway crossings. In the UK it can be made objective by linking
 the use of the tag to the presence of the sign, but then we would miss the
 many bridges which the average person would call a hump bridge but are
 not signed as such. I would suggest something like a bridge requiring
 driving speed to be reduced due to the vertical profile (i.e. not because
 it is narrow, or some other attribute). Not sure this depends on who is
 driving by the way, the laws of dynamics apply to all of us equally. But I
 agree that calculating whether a particular truck can pass a particular
 bridge is not easy to put into simple tags. It can be rather complex, which
 is why products like [2 http://www.autopath.co.uk/] exist. --colin [1]
 http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom [2]
 http://www.autopath.co.uk/ On 2014-08-10 15:34, Никита wrote:

 I'm fine with this tag being used in UK. But I care about it's definition.
 If this tag will be interesting only in some territory, why not to define
 this tag specific to UK? You didn't answer how we should define humpiness
 of bridge?.. Is this you who minority and cannot pass this bridge without
 speed reduction or it is me who can drive everywhere at regular speed? This
 is really subjective. 2014-08-10 16:47 GMT+04:00 Yves yve...@gmail.com
 mailto:yve...@gmail.com: There is a lot of things not of interest to
 the majority of users in OSM, this is why it is rich. Yves On 10 août 2014
 12:41:22 UTC+02:00, Colin Smale colin.sm...@xs4all.nl mailto:
 colin.sm...@xs4all.nl wrote: On 2014-08-10 12:13, Никита wrote: I.e
 they define this tag as subtype of
 http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real
 application/use to bridge=humpback. Also, bridge=humpback does not imply
 covered=yes by default. It does not define routing aspects or adds any
 features to end users. In the UK there are warning signs for some humpback
 bridges, and with good reason - if you don't slow down substantially from
 the ambient speed you will be launched into orbit. Therefore they should be
 useful for routers, implying a lower speed on that part of the road.
 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
 Some are so humpy that a vehicle with a long gap between the axles and/or
 a low ground clearance (e.g. a low-loader) may actually be unable to cross
 the bridge. So I don't think it is right to say that bridge=humpback cannot
 be of value for routing or end users... --colin
 
 Tagging mailing list Tagging@openstreetmap.org mailto:
 Tagging@openstreetmap.org
 https://lists.openstreetmap.org/listinfo/tagging -- Envoyé de mon
 téléphone Android avec K-9 Mail. Excusez la brièveté.
 ___ Tagging mailing list
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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Yves
Is there a tag for a non-intended, not speed-enforcing hump on a road?
This can occurs on a railway crossing, or due to the roots of a vigorous tree.


On 10 août 2014 18:24:05 UTC+02:00, Никита acr...@gmail.com wrote:
Yeah, traffic_calming was bad idea too, we use it for artificial
objects
with purpose of calming traffic.

Back to the topic: a bridge requiring driving speed to be reduced due
to
the vertical profile (i.e. not because it is narrow, or some other
attribute). Is okay definition, but we must add reference for not-UK
users
that there specific road sign for this in UK. Mappers should only apply
this tag if there risk for some category of drivers and not just any
bridge
with varying attitude. So be it.


2014-08-10 20:14 GMT+04:00 Colin Smale colin.sm...@xs4all.nl:

  It is neither constructed with the intention of calming traffic, nor
is
 it intended as any kind of barrier (a bridge is usually exactly the
 opposite!) Let us not be afraid of using a different tag for what is
 clearly a different attribute.

 --colin


 On 2014-08-10 17:52, fly wrote:

 Can't we use traffic_calming=hump for this situation or some
barrier=*?

 cu fly

 Am 10.08.2014 16:23, schrieb Colin Smale:

 No need to define it as UK-only... such bridges occur across the
whole
 world, I am sure. The UK may be unique by having a specific road
sign,
 which may indicate that a bridge could/should be tagged as a humpback
(as
 stated in the wiki[1

http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom]).
 There is also a sign for explicitly indicating a risk of grounding
often
 seen at railway crossings. In the UK it can be made objective by
linking
 the use of the tag to the presence of the sign, but then we would
miss the
 many bridges which the average person would call a hump bridge but
are
 not signed as such. I would suggest something like a bridge
requiring
 driving speed to be reduced due to the vertical profile (i.e. not
because
 it is narrow, or some other attribute). Not sure this depends on who
is
 driving by the way, the laws of dynamics apply to all of us equally.
But I
 agree that calculating whether a particular truck can pass a
particular
 bridge is not easy to put into simple tags. It can be rather complex,
which
 is why products like [2 http://www.autopath.co.uk/] exist. --colin
[1]
 http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_Kingdom
[2]
 http://www.autopath.co.uk/ On 2014-08-10 15:34, Никита wrote:

 I'm fine with this tag being used in UK. But I care about it's
definition.
 If this tag will be interesting only in some territory, why not to
define
 this tag specific to UK? You didn't answer how we should define
humpiness
 of bridge?.. Is this you who minority and cannot pass this bridge
without
 speed reduction or it is me who can drive everywhere at regular
speed? This
 is really subjective. 2014-08-10 16:47 GMT+04:00 Yves
yve...@gmail.com
 mailto:yve...@gmail.com: There is a lot of things not of interest
to
 the majority of users in OSM, this is why it is rich. Yves On 10 août
2014
 12:41:22 UTC+02:00, Colin Smale colin.sm...@xs4all.nl mailto:
 colin.sm...@xs4all.nl wrote: On 2014-08-10 12:13, Никита wrote: I.e
 they define this tag as subtype of
 http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real
 application/use to bridge=humpback. Also, bridge=humpback does not
imply
 covered=yes by default. It does not define routing aspects or adds
any
 features to end users. In the UK there are warning signs for some
humpback
 bridges, and with good reason - if you don't slow down substantially
from
 the ambient speed you will be launched into orbit. Therefore they
should be
 useful for routers, implying a lower speed on that part of the road.
 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
 Some are so humpy that a vehicle with a long gap between the axles
and/or
 a low ground clearance (e.g. a low-loader) may actually be unable to
cross
 the bridge. So I don't think it is right to say that bridge=humpback
cannot
 be of value for routing or end users... --colin


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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Steve Doerr

On 10/08/2014 10:04, Никита wrote:

I don't think so. Can you please define meaning of bridge=humpback?


Shorter Oxford has 'a small bridge with a steep ascent and descent'.

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Richard Z.
On Sun, Aug 10, 2014 at 06:14:24PM +0200, Colin Smale wrote:
  
 
 It is neither constructed with the intention of calming traffic, nor is
 it intended as any kind of barrier (a bridge is usually exactly the
 opposite!) Let us not be afraid of using a different tag for what is
 clearly a different attribute. 

without clear speed limits or hazzard signs it is just a very abstract 
danger of which plenty are more evil than a humpback bridge but not 
tagged in any way.. generations of drivers did drive there.
We don't tag narrow winding mountain roads with special attributes, nor 
do we expect routing software to deduce that wisdom from road geometry?
Sometimes I wish we would have something like key:reasonable_max_speed 
but we don't.

So either bridge=humpback is a substitute for key:reasonable_max_speed
- than we should think about that - or it is more an optical thing which 
could be handled within bridge:structure?


On Sun, Aug 10, 2014 at 08:24:05PM +0400, Никита wrote:
 Yeah, traffic_calming was bad idea too, we use it for artificial objects
 with purpose of calming traffic.
 
 Back to the topic: a bridge requiring driving speed to be reduced due to
 the vertical profile (i.e. not because it is narrow, or some other
 attribute).

very similar danger situation like hazard=dip, some railway crossings and 
any number of similar situations. Would it be worth to have an abstraction 
for that?


Richard

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Richard Z.
On Sun, Aug 10, 2014 at 12:41:22PM +0200, Colin Smale wrote:
 On 2014-08-10 12:13, Никита wrote:
 
 I.e they define this tag as subtype of
 http://en.wikipedia.org/wiki/Arch_bridge [5]. I don't see any real
 application/use to bridge=humpback. Also, bridge=humpback does not imply
 covered=yes by default. It does not define routing aspects or adds any
 features to end users.
 
 In the UK there are warning signs for some humpback bridges, and with good
 reason - if you don't slow down substantially from the ambient speed you
 will be launched into orbit. Therefore they should be useful for routers,
 implying a lower speed on that part of the road.
 
 https://uk.answers.yahoo.com/question/index?qid=20120222085933AAsnJiP
 
 Some are so humpy that a vehicle with a long gap between the axles and/or
 a low ground clearance (e.g. a low-loader) may actually be unable to cross
 the bridge.
 
 So I don't think it is right to say that bridge=humpback cannot be of value
 for routing or end users...

that is true, but shouldn't the routing sw be able to evaluate bridge:structure
and bridge:movable as well?
The intention was to add swinging rope bridges as a value of bridge:structure 
and
those may be relevant for routing as well.

Richard

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Re: [Tagging] bridge=humpback ?

2014-08-10 Thread Colin Smale
 

Exactly my point. In the UK you can be objective by linking it to the
presence of the sign, other countries may not use a sign. Having
established that such information (this bridge requires you to slow
down to avoid being launched) may be useful in certain cases, now we
are trying to represent that information in OSM. The
reasonable_max_speed would be a start, but if it is accompanied by some
indication of WHY the speed is what it is, like
reasonable_max_speed:reason=hump_bridge, then everybody could be
happy. OSM is essentially a 2D system. Whereas hazards like sharp bends
can possibly be derived from 2D information, anything significant in the
vertical plane needs all the help it can get, including hump bridges and
steep inclines. 

I'm not sure where you are from Richard, but don't you agree a bridge
like this is asking for some special tag? 

http://farm2.static.flickr.com/1263/1186115057_7f88a4aaed_o.jpg 

Same applies as far as I'm concerned for dips and steep hills which
constitute a hazard. As they can't be derived from 2D geometry, let's
find a way of marking them explicitly. There has already been work done
on incline=*: 

http://wiki.openstreetmap.org/wiki/Incline 

--colin 

On 2014-08-10 23:28, Richard Z. wrote: 

 On Sun, Aug 10, 2014 at 06:14:24PM +0200, Colin Smale wrote:
 
 It is neither constructed with the intention of calming traffic, nor is it 
 intended as any kind of barrier (a bridge is usually exactly the opposite!) 
 Let us not be afraid of using a different tag for what is clearly a 
 different attribute.
 
 without clear speed limits or hazzard signs it is just a very abstract 
 danger of which plenty are more evil than a humpback bridge but not 
 tagged in any way.. generations of drivers did drive there.
 We don't tag narrow winding mountain roads with special attributes, nor 
 do we expect routing software to deduce that wisdom from road geometry?
 Sometimes I wish we would have something like key:reasonable_max_speed 
 but we don't.
 
 So either bridge=humpback is a substitute for key:reasonable_max_speed
 - than we should think about that - or it is more an optical thing which 
 could be handled within bridge:structure?
 
 On Sun, Aug 10, 2014 at 08:24:05PM +0400, Никита wrote:
 
 Yeah, traffic_calming was bad idea too, we use it for artificial objects 
 with purpose of calming traffic. Back to the topic: a bridge requiring 
 driving speed to be reduced due to the vertical profile (i.e. not because it 
 is narrow, or some other attribute).
 
 very similar danger situation like hazard=dip, some railway crossings and 
 any number of similar situations. Would it be worth to have an abstraction 
 for that?
 
 Richard
 
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Re: [Tagging] Using highway=footway as an area

2014-08-10 Thread Martin Koppenhoefer


Il giorno 10/ago/2014, alle ore 16:53, SomeoneElse 
li...@mail.atownsend.org.uk ha scritto:

 Hi
 
 http://www.openstreetmap.org/#map=19/51.49428/-0.12149
 
 I've noticed highway=footway is being used as an area across Lambeth Bridge: 
 North side as a closed polygon; South side within a relation. (checking the 
 history previously they were both highway=pedestrian.
 
 Regardless of whether it's mapped as a footway or as a pedestrian area it 
 looks like a fairly extreme case of mapping for the renderer with no thought 
 given to map usability.



There could be a Bridge polygon for instance to unify the ways on the bridge 



Cheers,
Martin
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