JA:Key:kerb

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利用できる言語 — Key:kerb
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Public-images-osm logo.svg kerb
Kerb=lowered.JPG
説明
縁石の高さや通りやすさを示すために使用します。
グループ: 歩道
適用できる要素
ノードに使用可能ウェイに使用可能領域に使用不可能リレーションに使用不可能
よく併用されるタグ
ウィキデータ
Wikidata-logo.svgSearch Wikidata日本語の翻訳にご協力ください!
状態: 使用中Page for proposal

縁石kerbcurb)は、道路と歩道の境界です。表面や高さが違うところに渡ることができる地点がある場合、縁石の位置は歩行者、自転車、特に移動が制約された人(車いすなど)にとって重要です。

キーは kerb=* であり、 highway=footwayhighway=cyclewayhighway=path の縁石がある地点(道路の縁)のノードに使います。縁石が横断歩道の両端に等しい場合は、正確さよりも簡略さを取って highway=crossing ノードに kerb=* タグを追加できます。縁石が異なる場合は、 kerb:left と kerb:right の使用を検討してください。

注: OSM は大部分のタグにおいて北米英語よりもイギリス英語を使用する主義です。この場合、 curb よりも kerb が使われます。

タグ付け

Possible values for the tag are shown in the below table. Keep in mind that the heights given are only indicative, choice of a particular value should depend only on functional considerations. In other words, it is better to consider wheelchair/bicycle accessibility rather than the specific height of the kerb when choosing a value.

Value Typical height Typical use Description Example
lowered ~3cm Crossings & driveways Lowered kerbs are often found at crossing and driveways. They help ensure the crossing can be used by wheelchair users and allow access to drives. Some names for objects that fall into this category include driveway apron, curb cut (U.S.), curb ramp, dropped kerb (UK), pram ramp, and kerb ramp (Australia). Implies wheelchair=yes.

Use this as a replacement for sloped_curb=yes or both

Dropped kerb.jpg
raised >3cm Bus stops & older kerbs Raised sufficiently to prevent traversal by wheelchairs, as well as an impediment to bicycles. Typically seen at bus stops to provide a level platform to enter bus. Kassel kerbs are a special type of raised kerbs that are designed to guide the tires of a stopping bus. At least in the US, this is also the most common kerb at footway crossings before recent accessibility regulations came into existence. (Note: may be considered normal or yes pending discussion.) Aside from the general method, this can also be added to the highway=bus_stop node or platform node/way. Implies wheelchair=no, and may be used to increase the cost of traveling over this kerb by bicycle.
Kerb raised.JPG
flush ~0cm Crossings & driveways Similar to lowered, but kerb isn't of sufficient height to be noticed by blind users. May be combined with tactile paving to solve this issue. Implies wheelchair=yes.
P1210669.JPG
rolled N/A Residential streets Rolled is used to designate a curb traversable by vehicles and bicycles, but not wheelchairs. These are sometimes found in planned residential areas, providing access to driveways and sidewalks. This is not to be confused with kerb=lowered, which has a more gentle incline suitable for wheelchair use. Implies wheelchair=no.
Rolled curb.jpg
?? N/A Driveways A typical curb for driveways traversable by vehicles and bicycles, but not wheelchairs, due to too high degrees. Implies wheelchair=no.
Kerb-45deg.jpg
yes Any Some sort of kerb is present, but it can't or hasn't yet been determined whether it is raised, lowered, flush, etc. This may be useful when mapping via aerial imagery (prior to field survey) or if the exact type of kerb can't be recalled. Cautious routers could consider this to mean wheelchair=no, so whenever possible this value should not be used other than on a temporary basis.
no N/A No kerb is present. This may be useful to make it clear there is no kerb present if there used to be a kerb at this location.

kerb:height=<高さ><単位>

If exact height of the kerb is know this can also be marked using the tag kerb:height=*. Please state the unit used in the tag.

Type Tagging
Two crossings with lowered kerbs
Red nodes are tagged with kerb=lowered, crossing ways are marked with highway=footway and footway=crossing, crossing nodes are taggged with highway=crossing and crossing=traffic_signals.
Bus stop with raised kerb
Add to either the bus stop or the platform kerb=raised. It is assumed the kerb tag refers to the edge between the road and the platform. If you wish to explicitly map, tag the actually kerb as the way on the platform area.
Crossing over a traffic island with kerb
Use kerb=lowered on the nodes of the footway at the locations of the kerbs. Assuming both sides of the crossing are the same this could be added to the crossing node.
Crossing with flush kerb & tactile paving
Use kerb=flush and tactile_paving=yes on the nodes of the footway at the locations of the kerbs. Assuming both sides of the crossing are the same this could be added to the crossing node.
Raised, regular and lowered kerb in the same photo
This shows a raised kerb at the tram stop, a lowered next to it at the crossing, and a regular one closest to the viewer.

適用先

The proposed tagging applies to ノード nodes and ウェイ ways. When tagging ways please ensure you also apply the tag to any node where two ways intersect to help data consumers.

レンダリング

A renderer may choose to use a symbol on these nodes to indicate the type of kerb, or perhaps wheelchair accessibility.

関連タグ

The kerb=* node can also be tagged with tactile_paving=* to assist vision impaired individuals, and is especially important on kerb=flush nodes.

See also barrier=kerb.

影響する地物・ページ

RFC

An RFC was sent to the tagging list on 2011/06/21, Feature Proposal - RFC - Kerb.

  • 2011/06/22 - Per mailing list discussion, changed unknown to yes, and added back no value. Also made heights indicative and emphasized functional definition.

Open issues

  1. kerb:height - default unit
  2. kerb tags on ways
  3. Add a normal tag and use raised for bus platform type kerbs*
  4. Remove height guidance and base on local norms*

*From tagging mailing list

Document kerb:left and kerb:right for asymmetric kerbs tagged on a crossing node.

Use as sub-key for barrier=kerb.

関連項目

外部リンク