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Public-images-osm logo.svg proposed
Osm element key.svg
The proposed tag may be used for any road, railway or route that is in planning phase. Edit or translate this description.
Group: Lifecycle
Used on these elements
may be used on nodesmay be used on waysmay be used on areasmay be used on relations
Status: in use

Major road and rail planning schemes typically take years until actual construction begins. We may therefore wish to show planned roads, railways, routes (airports, other features...) on the map. Some commercial mapping companies also show planned features. This key can be used for any feature that is still in planning phase but construction hasn't yet started. For features under construction use construction=* instead.

In many cases it may be preferable to use a lifecycle prefix such as proposed:leisure=playground.

How to tag in general

The way to tag planned features is to use the main tag (Key, e.g. highway, railway, amenity, aeroway, ...) and add proposed as value. Then you create another tag proposed=* with x being the <value you usually would put on the main tag>.

You are also encouraged to add the source for the plan with source=*. Please take care about copyright issues and don't copy from plans you're not entitled to do so.

Values of proposed

Values of proposed=* can be all values usually used for the key where you inserted proposed as value (see above). Please keep in mind that cluttering the editors will cause problems (payload, clutter) to the other mappers, so don't exaggerate with proposed features.

Example-values for proposed highways

Value Element Comment Example
motorway way proposed motorway  
motorway_link way proposed motorway sliproad  
trunk way proposed important non-motorway road  
trunk_link way proposed sliproad to an important non-motorway road  
primary way proposed primary road  
primary_link way proposed sliproad to a primary road  
secondary way proposed secondary road  
tertiary way proposed tertiary road  
unclassified way proposed unclassified road (alternatively tag <proposed=minor>)  
residential way proposed residential road  
pedestrian way proposed pedestrianised road  
service way proposed service road  
track way proposed track  
bridleway way proposed bridleway  
cycleway way proposed cycleway  
footway way proposed foot path (alternative tag <proposed=footpath>)  
steps way proposed steps  

For roads to be removed, use proposed:highway=no. This is understood by (at least) ITO's Transport Construction map.

The way could be rendered as a modified (dashed, dotted, etc.) version of the corresponding highway=* tag. See the highway tag for a full description of the rendering style.

Example-values for proposed railways

railway=proposed is currently rendered on OSM Humanitarian and OpenRailwayMap, but not on the standard map.

Value Element Comment Example
rail way proposed standard gauge railway  
narrow_gauge way proposed narrow gauge railway  
light_rail way proposed light-railway  
tram way proposed tramway  
preserved way proposed preserved railway  
subway way proposed subway  
monorail way proposed monorail  

The way will usually render as a modified version (dashed, dotted, etc.) of the corresponding railway=* tag. See the railway=* tag for a full description of the rendering style.

Planning Phases

For more specific description of the planning phase it would be necessary to invent an additional tag, because not all plans are realized, hence describing the probability for a proposed project to be realized. Please add documentation here in the future.

Future considerations

  • a further tag could be added to illustrate the expected beginning of construction and planned opening date.

e.g. construction_start_expected=YYYY-MM-DD construction_end_expected=YYYY-MM-DD


This is frequently used to describe projects that are abandoned, planned to start in a distant future and ones that are de facto fictional. See for examples.