OpenStreetMap

Added Barriers to tracks

Posted by Richard Hufford on 16 August 2013 in English (English)

I added some barriers to tracks near Haekel Road. In one case, I could not find the track while driving along Haekel Road, but when I walked around I did find the track--it hasn't been used in awhile and is basically blocked by the barrow ditch. That ditch is pointed out in the location in this diary entry.
The other two barriers are on tracks some friends and I drove along. We discovered that the tracks were blocked by a dry wash. barrier=ditch seems like the most applicable tag to add. One of these barriers is located at (32.71174066517902, -109.496795473331). Did I add these barriers correctly?

Location: Haekel Road, Tanque, Graham County, Arizona, United States of America

Comment from russdeffner on 16 August 2013 at 17:05

Hello again Richard,

Looks like a good start, and as usually an improvement to the map/data is an improvement.

In general, it would be better to actually intersect the tracks with the barrier; i.e. create a node where the two lines cross. This will help routing engines determine that they do indeed intersect, versus a bridge that goes over the feature.

As for the barrow ditches, your method is fine unless you were to map the entire ditch, then you might want to use waterway=ditch; see this wiki page: http://wiki.openstreetmap.org/wiki/Tag:waterway%3Dditch - as it describes how barrier is implied.

As for the dry wash, it would be best to map the entirety of the 'stream'; see http://wiki.openstreetmap.org/wiki/Key:stream for more details to map it as an 'intermittent' stream, which I am guessing that water does flow down it when there is rain (maybe it even has a name?).

If you do switch from the barrier tags, then you'll want to mark a section of the track(s) as ford(s), see http://wiki.openstreetmap.org/wiki/Key:ford for details.

Hope that helps,

=Russ

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Comment from Richard Hufford on 31 August 2013 at 22:34

Hi Russ, Thanks for the comments. Sorry to take so long to reply. At first, I thought I had done as you suggested, but I think I see what you're saying now. The barrier and the road should actually have a node in common, right? I'm not inclined to map the entire barrow ditch. Barrow ditch is not actually part of my regular vocabulary, but I believe it means the ditch that runs alongside the road. In my mind, that means it is part of the road. At any rate, there are more important things to correct. In my mind, the dry washes around here are not intermittent streams, because the only time they have water is when it rains--just like my driveway. I was looking around at the OSM Wiki, and I see that there is something called a Wadi. (There are so many words for dry wash!) Does it seem right to you for me to map the dry washes as Wadis? Finally, I updated the San Simon barrier dam yesterday. It's an erosion control structure, and I'll make a new diary entry for that. Say, is it OK if I make you a friend on OSM?
-Richard Hufford

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Comment from Richard Hufford on 2 September 2013 at 15:29

russdeffner, I'll try to correct my barriers and a few other things today or tomorrow (Sept 2 or 3). I took some more GPS readings yesterday. One of the ditches is already about 2 feet deeper, so there's no doubt I was correct to put a barrier there!

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