Proposed features/New barrier types

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New barrier types
Status: Approved (active)
Proposed by: dieterdreist
Tagging: barrier=*
Applies to: node,way
Definition: a proposal to add several new barrier types
Rendered as: *
Draft start: 2010-05-12
RFC start: 2010-09-20
Vote start: 2011-09-01
Vote end: 2011-09-15

Contents

Reasoning

Following a discussion on talk-DE started on 2010-05-03 this proposal promotes several new values to add to barrier=* and some new subtags for access controls and other useful combinations, which have proven to be missing in actual mapping.

Tag values

Key Value Element Comment Rendering Photo
barrier swing_gate NodeWay This is a gate similar to a lift gate but rotates sidewards to open. It is usually made out of metal bars (wood or other material possible) and is intended to prevent cars from access but can usually be crossed by pedestrians and cyclists. 16052010022.JPG
barrier rope NodeWay this is a flexible barrier made of fibres, twisted or braided together to improve strength. As a barrier it is often more symbolic than actually physically preventing pedestrians from accessing. Black Red Gold Rope at German Bundestag in Berlin 2010.jpg
barrier cable_barrier NodeWay Also called guard cable. This is a road side or median barrier made of steal wire ropes mounted on weak posts. See also the more extensive wikipedia description. 5-wire-rope-barrier.jpg
barrier chain Node Way use this when the passage is closed by a chain. This kind of barrier can usually be crossed by pedestrians, but it might be forbidden to do so Schranke barrier 1.jpg [1]
barrier log Node Way use this when the passage is closed by lumber (trunk of a tree). This kind of barrier is often useful to sit on. This barrier is a penalty to cyclists but can be crossed by lifting the bike over. Rundholz-buche.jpg
barrier turnstile Node Way use this for small turnstiles like the ones in supermarkets or some subways SkidataTurnstile.JPG
barrier full-height_turnstile Node Way use this for full-height turnstiles, also called HEET-turnstiles (High Entrance/Exit Turnstile), like the ones to access security areas TR-a.JPG
barrier guard_rail Node Way use this for guard rails (also called crash barriers) CrashBarrier.jpg
barrier kerb Node Way A (for example footway) kerb is a barrier for cyclists and wheelchair drivers. The height of the kerb is important and with this information, the usage by different groups can be determined. The height of the kerb is tagged additionally as height=*, if available. See talk-Page for more details. Obrubnik.jpg
barrier spikes Node Way Area spikes on the ground that prevent unauthorized access. Can also be removeable e.g. after payment in a garage. US Army spike strip.jpg
barrier jersey_barrier Node Way Area A jersey barrier consists of heavy prefabricated blocks to create a barrier. on wikipedia. Use material=plastic and material=concrete to express the used material. Dora Baghdad soldiers.jpg


composite examples

Name Value Element Comment Rendering Photo
barrier post_and_chain Way This is a barrier usually made of wooden (sometimes metal) posts with a chain between them. Very common in parks and college campuses in North America, placed parallel to sidewalks/footways/roads to keep people from walking across the grass and wearing a path. Posts typically are 1 meter or so tall. When placed parallel to a sidewalk/footway, map post_and_chain barriers like a fence. If placed across a sidewalk/footway, map it like a chain (or rope according to what is there) and put nodes for the posts. Tag the posts as _____. While a fence is detectable with a white cane, blind persons usually detect this barrier too late. Example of post-and-chain barrier for OSM.jpg

Combinations / Subtags

These subtags can be combined with barrier-objects to indicate the way you can pass / access control measures:

Voting

This feature is approved. Voting ended at 15.09.2011 43 votes were cast. 32 yes votes (74,4%). 14 (32,6%) people (Pieren, Bomm, Acheron, BoricC, Realadry, ExtremeCarver, Al., Species, Seoman, Fkv, Marko Knöbl, R-michael, Surly, Oligo) voted against kerbs as barriers.

Pieren, why is it not a barrier? Kerb to me is not the most important of the suggested values, but IMHO if qualifies for the definition given in Key:barrier: 'Physical barriers to all types of "beings" such as vehicles, humans or animals.'--Dieterdreist 17:52, 1 September 2011 (BST)
I fully support tagging kerbs but not as 'barrier'. Definition of barrier is "A structure, such as a fence, built to bar passage.". A kerb doesn't bar passage to humans, animals or vehicles. I'm sorry, a kerb is not a barrier. Or not more than a bump for instance which is tagged with 'traffic_calming' key, not with 'barrier' --Pieren 09:38, 2 September 2011 (BST)
Where do you get this definition from? It can't be the definition we use in OSM because our barriers include features that are not 'built structures', see hedge or ditch for instance. See the osm key page of barrier for our definition. A kerb is indeed a barrier to many wheelchair and bicycle users. --Dieterdreist 18:19, 3 September 2011 (BST)
from a dictionnary. About wheelchair, a kerb may or may not be impassable but it is less a barrier than steps which is not in your list. Kerb is not a "barrier" for a bicycle, neither for a car (excepted for some Ferrari's) --Pieren 11:52, 5 September 2011 (BST)
yes, you can add kerb attributes. Nobody forces you to tag kerbs and I won't probably tag them myself, but of course kerbs are built to separate the street from the pavement, and this leads to the problem that some users of the pavement have difficulties to cross the street (it is a barrier).-- Dieterdreist 18:19, 3 September 2011 (BST)
I do not deny that a kerb is difficult or impossible to cross for wheelchairs. IMHO the main difference between kerb and the other values is the intention or purpose. That's why I opose this specific value. -- Bomm 20:44, 6 September 2011 (BST)
So what? Some barriers are better tagged on nodes, others on ways, what's the problem? The existing barriers also are not all of the same kind. I also saw guard_rails blocking a road. All proposed values are within the scope of key:barrier --Dieterdreist 18:19, 3 September 2011 (BST)
I mapped a guard_rail that is a barrier because it closes a disused street trunk. Jersey idem, it's used in my city as a way to close access to a road. :) So perhaps there should be another way to tag different uses of the 'contested' features. --Sarchittuorg 19:48, 4 September 2011 (BST)
see above. Some are (mostly) along the road, other across. It is consistent, because this is not the criterion of the key barrier.-- Dieterdreist 18:19, 3 September 2011 (BST)
agree for the log picture. Can you expand on the difference of "obstacle" and "barrier"?--Dieterdreist 18:19, 3 September 2011 (BST)
I understand a barrier in the same way as Pieren - a structure intended to bar passage, with emphasis on intention. Other structures such as kerbs or raised road markers (see diskussion page) are not intended to bar passage, thus the 'weaker' term 'obstacle' as opposed to the 'stronger' 'barrier'. 'Obstruction' instead of 'obstacle' might be even better - maybe a native English speaker could make a suggestion here? --Seoman 16:51, 5 September 2011 (BST)
Please see discussion page for more. --Seoman 11:45, 16 September 2011 (BST)
I already map some guard_rails with explicit ways, because it gives more detail in some cases and you don't have to split the main road. I am not requesting that you do the same, but I also don't want to get the disadvantages of your proposed way to do it. --Dieterdreist 18:19, 3 September 2011 (BST)
Can't understand what the problem should be that someone added this value in the meantime to the features page (without voting obviously) that now you oppose for this reason. Agree for barrier:video that barrier:surveillance might be thinkable (on the other hand having audio and video as similar subkeys is not bad either). Feel free to use the guard_rail stuff somehow on the road, I don't do this but map only special guard rails which I want to map explicitly. --Dieterdreist 18:19, 3 September 2011 (BST)
A gate looks like a high double-leaf door; and a swing_gate looks like a lift_gate swinging left-right, not up-down. --Surly 17:14, 8 September 2011 (BST)
And it is just as narrow-minded to dismiss the discussed distinction between intended and not intended with a comment like that.--Seoman 08:59, 13 September 2011 (BST)
Of course kerbs are intended. They were invented in ancient Rome to protect pedestrians from vehicle traffic, and they do so still now. --Dieterdreist 20:07, 15 September 2011 (BST)
Please see my answer on the discussion page under 'new barrier type'. --Seoman 11:45, 16 September 2011 (BST)
No, a kerb is not what common definition says about 'barrier'. Of course, it is maybe impassable for wheelchair users but that's not a good reason to qualify it as a 'barrier'. If you don't know how to swim, a river is also a barrier. If you are afraid about darkness, a forest is a barrier. If you are agoraphobic, a wide-open space is a barrier. If we go that way, everything is a barrier... And Lulu-Ann, please don't presume other opinions when you don't know the people. Your mind might be narrower than you are expecting. --Pieren 22:36, 18 September 2011 (BST)

Retrieved from "http://wiki.openstreetmap.org/wiki/Proposed_features/New_barrier_types"
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