OpenStreetMap

Rendering detailed road areas

Posted by PlaneMad on 10 February 2017 in English (English)

There are a couple of proposed tagging schemas for intense mappers to map street areas and road markings to enable a much more detailed road rendering with accurate widths and lanes.

Proposed tagging schema for street areas

Mappers are already active in Poland using this proposal and also have a renderer in place to visualize this with pretty impressive results.

Road area tag rendering from OSM Poland

The next level is going to be having accurate lane marking within the surfaces, but it looks like till date there has been no successful attempt to render roads to such a level of detail. A few weeks ago, Rasagy from Mapbox wrote about styling individual lanes using the Studio tool. The approach uses individual lanes geometries and seem to give good results, but involves a lot of mapping effort.

An attempt to style individual lanes using Mapbox Studio

If anyone is interested to try their hand at styling roads to such level of details, there is a sample intersection that has been traced by Chetan_Gowda and Fa7C0N on the OSM sandbox in Manhattan. If you are using Mapbox Studio, you can directly start styling the data by adding this tileset to a new style. Alternatively, you can use a geojson of the data to use in any other styling tool or to just explore the tags used.

Looking forward to seeing any interesting experimental outputs :)

Comment from BushmanK on 10 February 2017 at 18:03

Just a quick reminder. Usage of amenity=parking_space on the first illustration is incorrect. amenity=parking should be used instead.

Use amenity=parking_space to map a single parking space on a parking lot. Mapping parking spaces is an addition, not a replacement, to mapping a whole parking lot with amenity=parking.

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Comment from Warin61 on 10 February 2017 at 21:39

Divider Areas

These can be grass... or concrete, rock, shrubs, trees. They are not always grass. https://upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Sydney_-_Newcastle_freeway_north_bound_at_Berowra.jpg/270px-Sydney_-_Newcastle_freeway_north_bound_at_Berowra.jpg

https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Jolls_Bridge_on_the_F3_Freeway_-_north_of_Hawkesbury_River%2C_N.S.W..jpg/220px-Jolls_Bridge_on_the_F3_Freeway_-_north_of_Hawkesbury_River%2C_N.S.W..jpg

https://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Hume_Highway.JPG/220px-Hume_Highway.JPG

https://maps.six.nsw.gov.au/arcgis/rest/services/public/NSW_Imagery/MapServer/tile/19/313977/482329

In addition there are 'runoff areas' at the side of roads. Sometimes used to provide services such as lighting, water drainage, emergency parking/phone.

I thing the best way of tagging these is to use landuse=highway for the areas. The landcover tag can also be used in addition to specify the cover used.

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Comment from BushmanK on 11 February 2017 at 00:08

@Warin61, that picture says "e.g. landuse=grass", so it is completely correct since it is just an example.

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Comment from Warin61 on 11 February 2017 at 02:02

@BushmanK .. yes the whole thing is an example. It may have been better to give a link for the stuff that is left out.

In that example other kinds of divider areas have area:highway=traffic_island ... from wiki.openstreetmap.org/wiki/Proposed_features/Street_area .. dated 2011.

Nothing in the above proposal encompasses the whole area that is used by the highway e.g. the verge ... I would think something similar to landuse=railway would be appropriate.

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Comment from Alexandre Magno on 17 February 2017 at 22:51

The result is cool and imprecise.

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