Proposed features/junction details

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Additional junction details
Status: Proposals with undefined or invalid status (inactive)
Proposed by: Johan_C
Tagging: junction:ref=[[Tag:junction:ref=<ref>|<ref>]]
Applies to: way
Definition: Specify the ref of the junction a way belongs to
Drafted on: 2012-11-24

This proposal introduces the key junction:ref which allows to specify the reference of the junction a way belongs to.

Note: As of Nov 24th 2012 this key is already used about 6000 times according to taginfo.

Available languages — Key:junction:ref
Afrikaans Alemannisch aragonés asturianu azərbaycanca Bahasa Indonesia Bahasa Melayu Bân-lâm-gú Basa Jawa Baso Minangkabau bosanski brezhoneg català čeština dansk Deutsch eesti English español Esperanto estremeñu euskara français Frysk Gaeilge Gàidhlig galego Hausa hrvatski Igbo interlingua Interlingue isiXhosa isiZulu íslenska italiano Kiswahili Kreyòl ayisyen kréyòl gwadloupéyen kurdî latviešu Lëtzebuergesch lietuvių magyar Malagasy Malti Nederlands Nedersaksies norsk norsk nynorsk occitan Oromoo oʻzbekcha/ўзбекча Plattdüütsch polski português português do Brasil română shqip slovenčina slovenščina Soomaaliga suomi svenska Tiếng Việt Türkçe Vahcuengh vèneto Wolof Yorùbá Zazaki српски / srpski беларуская български қазақша македонски монгол русский тоҷикӣ українська Ελληνικά Հայերեն ქართული नेपाली मराठी हिन्दी অসমীয়া বাংলা ਪੰਜਾਬੀ ગુજરાતી ଓଡ଼ିଆ தமிழ் తెలుగు ಕನ್ನಡ മലയാളം සිංහල ไทย မြန်မာဘာသာ ລາວ ភាសាខ្មែរ ⵜⴰⵎⴰⵣⵉⵖⵜ አማርኛ 한국어 日本語 中文(简体)‎ 吴语 粵語 中文(繁體)‎ ייִדיש עברית اردو العربية پښتو سنڌي فارسی ދިވެހިބަސް
Public-images-osm logo.svg junction:ref
Osm element key.svg
Group: Highway
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasuse on relations unspecified
Wikidata
Status: in usePage for proposal

Rationale

Nowadays the big suppliers of navigational devices offers a roadsign view. The key destination=* and Proposed features/Destination details offer support for a roadsign view. The key junction:ref is necessary to support the roadsign view of both exit numbers as can be seen on these signs.

A12 Den Haag junction 2 and 3 signs.jpg

Tagging

Tagging scheme
Tag Description Example
junction:ref=* Reference number. 16


Examples

Tags Description
junction:ref=2 Exit 2. This key should be used on the left way directly behind the motorway_junction node.
junction:ref=3 Exit 3. This key should be used on the right way directly behind the motorway_junction node.

Common questions

Why not stick to the ref=* in motorway_junction=*?

Good question. For normal motorway_exits the ref in the motorway_junction would be sufficient. However, there are some other reasons which make it more logical to use junction:ref.

1. Consistency in tagging. All other information to support a Roadsign view is stored in OSM ways, like maxspeed=*, lanes=*, destination=*, destination:ref=*. So why shouldn't the junction:ref info be stored in the way?

2. The current tagging of the motorway_junction node does not support the situation as shown above

Why not deprecate motorway_junction?

It's used too many times already. And it looks good in a renderer like Mapnik.

Why name it junction:ref?

It's consistent with other tagging, like destination:lanes=* and destination:ref=*

Why not use ref=*?

The ref of the motorway_link is quite often the same as the ref of the motorway, like "A 3".

Comments

Please use the Discussion page for this.

Related keys

See also