Please see the proposals discussion page for the history of this key.
I have added some examples. The big problem is, that pictures are really not telling how it looks in reality. Sometimes moving back/forward for the picture changes the whole situation, while on the trail the eye has no problem at all identifying the trail.--Extremecarver 18:07, 21 November 2010 (UTC)
Why not apply it to highway=track as well?
Since some tracks are seldom used, they are not easily visible--especially tracks whose tracktype=grade5 (i.e. unpaved track; lack of hardcore, and uncompacted, subtle on the landscape, made from only grass, sand and/or soil).
Wouldn't it be useful to tag tracks with trail_visibility? OK, probably tracktype already gives a hint about the track visibility, but with trail_visibility I think it would be much more explicit.--solitone, 2012.01.19
something between excellent and good?
often most wooded trails have pretty good visibility but sometimes the visibility breaks down with leaf cover etc not quite sure how to handle those situations I have been for the most part just tagging them as good or excellent based on sections that have better visibility then other sections it can vary a lot over the coarse of a trail though. --Kc0nlh 2014.05.12
controversy about verifiability
I've added a section about the controversy about this tag (Mainly because it is listed at because verifiability this tag. Those who want to propose solution that problem are welcome to talk about it here. sletuffe (talk) 18:05, 19 February 2015 (UTC)