Proposed features/Terrain accident

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Terrain accident
Status: Abandoned (inactive)
Proposed by: *
Tagging: accident=*
Applies to: way
Definition: General of linear (narrow) accidents of the terrain
Rendered as: Brown line with perpendicular bars towards where the terrain goes down (left side of line when declaring direction)
Drafted on:
Proposed on: 2009-02-20

If you have suggestions you can help either directly or in the discussion page.


There is currently no unified way to tag trenches or ditches, levees (dikes, embankments, floodbanks, stopbanks or causeways), or sudden elevation changes due to landslides, or steep rocks. The steepness of the feature should usually be over 100%.

Origins of the issue :


key values meaning rendering
accident trench, gully, ditch Represents a type of linear excavation or depression in the ground. Trench.png
accident levee Represents a natural or artificial slope or thick wall. Levee.png
accident terrace Line along where terrain elevation goes up or down a few meters (Hikers should usually be able to climb down, even if significantly slowed down. Higher is usually a cliff natural=cliff) The perpendicular dashes are oriented towards the lower ground Terrace.png
accident hole A single hole a few meters wide brown cross
accident rock,rocks A heap of rocks or a large, single rock brown dots
height * The depth or height (in meters) of the feature
steepness * Steepness in degrees
width * Width in meters
material ground, sand, concrete, rocks, wood


Rendering these features as proposed may not be technically possible with osmarender. To mark the declination, proper line direction should be used. In case of terrace, right side of line goes uphill.