Provides a classification of tracks.
Tracktype is a measure of how well-maintained a track or other minor road is. It usually applies to highway=track, but may also be used on other types of highway, especially in less-developed places where many main roads are unpaved. The proposal from which this key originates may be found at Proposed_features/grade1-5. The proposal was voted on, but was standardised primarily because of its widespread use.
See also: surface=*, smoothness=*. Although surface and smoothness are in use, tracktype is still meaningfull as rough classification. tagging statistics show, that tracktype is often used for non-tracks, too, as rough classification.
See below for tag values for 'tracktype':
|tracktype||grade1||Paved track or heavily compacted hardcore.|
|tracktype||grade2||Unpaved track; surface of gravel mixed with a varying amount of sand, silt, and clay. See Gravel road on Wikipedia.|
|tracktype||grade3||Unpaved track; an even mixture of hard and soft materials.|
|tracktype||grade4||Unpaved track; prominently soil/sand/grass, but with some hard materials, or compressed materials mixed in.|
|tracktype||grade5||Unpaved track; lack of hard materials, uncompacted, subtle on the landscape, surface of soil/sand/grass.|
This table is a wiki template with a default description in English. Editable here.