Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Gerald Weber


 I think that they generically belong to Proposed 
 features/hazardhttp://wiki.openstreetmap.org/wiki/Proposed_features/hazard
 of which the article in the discussion is very eloquent regarding the wide
 scope or that tag.
 I am surprised that this proposition is 6½ years old and that taggers have
 been tagging that much time without much concern with what it contains or
 can be extended to (and taggers, who seem more interested in adding new
 features than readjusting what was done, will probably rarely come back to
 add hazards).
 In particular, I have started tagging speed limits and I was perfectly
 astounded that absolutely no 30 km/h limit tagged so far indicates
 school/children safety. 30 km/h limits are often of that kind  however and
 they are important to know as a child can burst from between two parked
 cars.
 I have slightly amended hazard=school_zone, especially to cover a crossing
 in that zone.


What all proposed keys (trafficability, traffic_issue, roadnote, hazard)
have in common is that we wish to alert people about something important
about a given road.

But why only roads?

So why not a more generic tag to alert people about all sorts of problems?

For example a beach where your leg may become shark's breakfast if your are
not careful:

natural=beach
alert=text
alert:text:en=Risk of shark attack
alert:severity=danger

Real-life example: Boa Viagem beach in Recife, Brazil.
Have a look at the signpost:
http://www.bbc.co.uk/news/world-radio-and-tv-19720455

here the idea of alert=text would be to make explicit that this
particular alert is not yet covered by any established key-value.

For well defined alerts one could use pre-defined keys

alert=school_zone
alert:severity=hazard

The pre-defined keys could have implicit alert:severity levels, so for
example alert=school_zone could implicitly be alert:severity=hazard which
would require then only one tag

alert=school_zone

The use of the word alert would make the action clear to renderers and
routers: they have to alert the user in some way.

cheers

Gerald
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Ronnie Soak
2014/1/17 Gerald Weber gwebe...@gmail.com



 But why only roads?

 So why not a more generic tag to alert people about all sorts of problems?



Oh please restrict that to official warnings! I can already see thousands
of hazard tags of
concerned citizens warning me about every ditch in the road, cold weather
in the mountains, darkness at night, passages that are slightly to small
for THEIR car, explicit grafiti content on their favorite bus stop 

I really don't want to see OSM filled with their personal commented edition
of the world.

So if you think that the pebbles on the beach are a bit to pointy for bare
feet - go to tripadvisor
If there is a warning sign about undercurrents or shark attacks - OSM
welcomes your addition.

my ranty 2 cents,

Chaos
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Gerald Weber

 2014/1/17 Gerald Weber gwebe...@gmail.com



 But why only roads?

 So why not a more generic tag to alert people about all sorts of problems?



 Oh please restrict that to official warnings! I can already see thousands
 of hazard tags of


The shark attacks in Recife are alerted by official signs.


 I really don't want to see OSM filled with their personal commented
 edition of the world.


I agree that this sort of thing may happen. Actually, I think this will
happen as in fact it already does happen all the time.

Almost everyday I see people changing highway priorities because they
didn't like the colour in the map.  The other day there was a fierce debate
in Talk-BR about excessive numbers of tertiary in a certain city, which
turned out to be mainly a problem of the map not looking very nice.

However, this is not a problem of tagging.

This is a problem of the over-permissive general structure of OSM which
allows everyone to do whatever they want without a minimal supervision. (No
flames here, thank you)

Eventually this culture will need to change if one wishes ensure minimal
standards of quality to the maps and to avoid the sort of things you fear
may happen. Wikipedia had to go through this painful
processhttp://www.newscientist.com/article/mg21829122.200-free-for-all-lifting-the-lid-on-a-wikipedia-crisis.html#.Utkn8ZCJCT0and
so one day will OSM.

With things being as they are, I am willing to cope with this noise and not
have my leg bitten of by a shark.

cheers

Gerald
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread John F. Eldredge
Ronnie Soak chaoschaos0...@googlemail.com wrote:
 2014/1/17 Gerald Weber gwebe...@gmail.com
 
 
 
  But why only roads?
 
  So why not a more generic tag to alert people about all sorts of
 problems?
 
 
 
 Oh please restrict that to official warnings! I can already see
 thousands
 of hazard tags of
 concerned citizens warning me about every ditch in the road, cold
 weather
 in the mountains, darkness at night, passages that are slightly to
 small
 for THEIR car, explicit grafiti content on their favorite bus stop
 
 
 I really don't want to see OSM filled with their personal commented
 edition
 of the world.
 
 So if you think that the pebbles on the beach are a bit to pointy for
 bare
 feet - go to tripadvisor
 If there is a warning sign about undercurrents or shark attacks - OSM
 welcomes your addition.
 
 my ranty 2 cents,
 
 Chaos
 
 
 
 
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Some years ago, I traveled through a county in eastern Kentucky, in the 
Appalachian Mountains region, where there were a great many landslides 
affecting the highway.  I don't know whether the soil type was to blame, but 
every mile or two there would be a place where either one lane of the two-lane 
highway would be partially blocked by a slide, one lane showed signs of 
subsidence, or one lane was partially or completely missing, having slid down 
the mountainside.  Only about one-third of the slides had official warning 
signs.  I would argue that this whole stretch of highway needed to be tagged as 
having a high risk of landslides, rather than only tagging the places that had 
already slid, since the latter would be perpetually out of date.  No official 
signs stated risk of landslides 

-- 
John F. Eldredge -- j...@jfeldredge.com
Darkness cannot drive out darkness: only light can do that.
Hate cannot drive out hate: only love can do that.
Dr. Martin Luther King, Jr.
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Paul Johnson
For something other than official warnings, this seems like something that
would be best served by a potential future OpenLiveTraffic service (that
could potentially, say, display average travel speeds per way of other
users over the last hour, and reported transient problems like bad traffic,
speed trap, accidents, etc)


On Thu, Jan 16, 2014 at 4:59 PM, André Pirard a.pirard.pa...@gmail.comwrote:

  On 2014-01-13 14:53, Pieren wrote :

 On Mon, Jan 13, 2014 at 1:47 PM, BGNO BGNO bgno2...@gmail.com 
 bgno2...@gmail.com wrote:


  The information which people gave me about the mentioned 20km long
 road was: Yes you can use the road with a regular car if it doesn't
 rain. I think it is practicable to tag that information into OSM. How
 would you tag that based on physical models?

  I agree with you. But there is currently nothing formally adopted for
 such access conditions based on weather.
 Searching the wiki, I found these proposals:
 - surface=all_weather ([1]) but the values should be reworked
 - dry_weather_only=yes/no ([2])
 - the conditional access restrictions ([3]) (but this is more legal
 with traffic signs)
 - see all the pages on specific road tagging per countries ([4])
 - and how other countries handle the question you raise. For instance,
 Australia ([5])

 They are maybe other ideas. What you need is find the best one and
 use it. Or if you want that the community (and the renderers styles
 maintainers) adopt it as well, start a vote process and explain how
 important it is in your country.


 I think that those road conditions are akin to danger of flooding.
 I think that they generically belong to Proposed 
 features/hazardhttp://wiki.openstreetmap.org/wiki/Proposed_features/hazard
 of which the article in the discussion is very eloquent regarding the wide
 scope or that tag.
 I am surprised that this proposition is 6½ years old and that taggers have
 been tagging that much time without much concern with what it contains or
 can be extended to (and taggers, who seem more interested in adding new
 features than readjusting what was done, will probably rarely come back to
 add hazards).
 In particular, I have started tagging speed limits and I was perfectly
 astounded that absolutely no 30 km/h limit tagged so far indicates
 school/children safety. 30 km/h limits are often of that kind  however and
 they are important to know as a child can burst from between two parked
 cars.
 I have slightly amended hazard=school_zone, especially to cover a crossing
 in that zone.

 I suggest that the discussion is ripe and that a vote be started at least
 for children hazards.

 Cheers,

   André.

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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Martin Koppenhoefer
2014/1/17 Gerald Weber gwebe...@gmail.com

 But why only roads?

 So why not a more generic tag to alert people about all sorts of problems?

 For example a beach where your leg may become shark's breakfast if your
 are not careful:

 natural=beach
 alert=text
 alert:text:en=Risk of shark attack
 alert:severity=danger




Some of these tags seem more like an instruction for the programmer how he
should use the information, rather than actual information. What else would
there be? alert=flashlight, alert:flash-frequency=2, alert:flash-colour=red?
If there is a potential danger like sharks in the water, this could be
formalized: danger=animals, danger:animals=sharks
(given that there is a sign warning people, as I also agree with Ronnie,
lets not promote personal comments).

cheers,
Martin
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-17 Thread Bryce Nesbitt
+1 for *any* object alerts.
+1 that we mostly want the *official* alerts.

The level of authority on the alert should be a tag, even if the
description is free text:

*osmid=1234*
*map_alert:severity=critical*
*map_alert**:note:en='Bridge operated by remote control. Press red button
to alert operator.  Posted sign warns: Vehicles on bridge without
permission will be destroyed by artillery fire MEG12311-34.*
*map_alert**:website:en=http://mil.example.gov/red_bridge.htm
http://mil.example.gov/red_bridge.htm*
*map_alert**:authority=sign;website;statute:milexamplegov12313-34u/a*
*surface=paved*
*highway=primary*

*bridge=yes*

*name=Red Bridge*

*access=permissive*
*barrier=explosive*s

[Relations: example_gov_coastal_scenic_route, state highway #32323,
bridges_rigged_with_explosives]


This follows the principle that tags should be enough to set reasonable
visibility, but free text may be more useful when communicating to humans.
 And like Wikipedia, it encourages such assertions be backed up by a strong
reference.

The use of ; above is deliberate: by setting a ; expectation from day one,
render/edit software will be less likely to lag in support, and users less
likely to create conflicts.


-
Note 1: It's possible that one object needs more than one distinct notice.
  The red bridge for example might have car size holes in it from artillery
fire, which come under a different form of note.

Note 2: Simply tagging the *warning sign* has certain merit, but is less
semantic than above.
One could also create a map_alert node connected to a OSM object:

  map_alert:severity=informational
  map_alert:season=spring
  *map_alert**:note:en='Sea monsters have been observed nipping at
heels of pedestrians on bridge, but only in Spring'.*
  map_alert:osmid=*1234*

So the map alert either works like a relation or is a relation.
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Re: [Tagging] hazards (was: Feature Proposal - RFC - trafficability)

2014-01-16 Thread André Pirard
On 2014-01-13 14:53, Pieren wrote :
 On Mon, Jan 13, 2014 at 1:47 PM, BGNO BGNO bgno2...@gmail.com wrote:

 The information which people gave me about the mentioned 20km long
 road was: Yes you can use the road with a regular car if it doesn't
 rain. I think it is practicable to tag that information into OSM. How
 would you tag that based on physical models?
 I agree with you. But there is currently nothing formally adopted for
 such access conditions based on weather.
 Searching the wiki, I found these proposals:
 - surface=all_weather ([1]) but the values should be reworked
 - dry_weather_only=yes/no ([2])
 - the conditional access restrictions ([3]) (but this is more legal
 with traffic signs)
 - see all the pages on specific road tagging per countries ([4])
 - and how other countries handle the question you raise. For instance,
 Australia ([5])

 They are maybe other ideas. What you need is find the best one and
 use it. Or if you want that the community (and the renderers styles
 maintainers) adopt it as well, start a vote process and explain how
 important it is in your country.

I think that those road conditions are akin to danger of flooding.
I think that they generically belong to Proposed features/hazard
http://wiki.openstreetmap.org/wiki/Proposed_features/hazard  of which
the article in the discussion is very eloquent regarding the wide scope
or that tag.
I am surprised that this proposition is 6½ years old and that taggers
have been tagging that much time without much concern with what it
contains or can be extended to (and taggers, who seem more interested in
adding new features than readjusting what was done, will probably rarely
come back to add hazards).
In particular, I have started tagging speed limits and I was perfectly
astounded that absolutely no 30 km/h limit tagged so far indicates
school/children safety. 30 km/h limits are often of that kind  however
and they are important to know as a child can burst from between two
parked cars.
I have slightly amended hazard=school_zone, especially to cover a
crossing in that zone.

I suggest that the discussion is ripe and that a vote be started at
least for children hazards.

Cheers,

André.


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