|A system of routes (or bicycle rental stations) typically maintained or designated by a single agency or organization, or for bicycle and walking routes, an indication of the scope of the route.|
|Used on these elements|
|Documented values: 57|
|Tools for this tag|
The network key is used in several tagging schemes for a variety of purposes:
On highway route relations, this key indicates the highway system. Highway systems often have coherent numbering schemes. Some common values are listed at Relation:route#Road routes and Category:En tag descriptions for key "network".
In many countries, the most common
network values are
xy:regional, where xy is a two-letter ISO country code.
In the United States, Canada, Brazil, Italy, and India, most
network values for highway routes follow a hierarchical, colon-delimited scheme. Codes are preferred to spelled-out names where available. For example, network=US:TX:FM corresponds to Texas' statewide Farm to Market network; network=US:NY:Onondaga is for county routes in Onondaga County, New York; and network=US:OH:MED:Harrisville is for township routes in Harrisville Township, Medina County, Ohio.
The OpenStreetMap Foundation's United States chapter hosts a Shield Renderer, based on the Standard stylesheet, that displays accurate route markers based on the
network key on route relations. There is a summary of supported networks, and you can help add support for additional networks (see the README). It is hoped that the Standard stylesheet will someday adopt
network-based route shields.
Public transit routes
Bicycle and hiking routes
On route relations tagged with type=route and route=bicycle or route=hiking, this key indicates the scope of the route. For example, a national cycling network is network=ncn while a national hiking trail network is network=nwn. See Cycle routes and Walking routes for lists of possible values.
Due to the use of generic "lcn", "rcn", "ncn", and "icn" network values in cycle route relations, a cycle_network=* tag is also in use in places that require more granular network distinctions, such as in the United States.
In conjunction with amenity=bicycle_rental or amenity=atm, this key identifies an organization or brand that operates a similar amenity in various other locations. For example, a bicycle rental station in London may belong to the "Barclays Cycle Hire" network. An ATM may belong to a network shared among many banks.
This key is also used in the following proposals: