On Sun, Sep 17, 2017 at 7:10 PM, Dave Swarthout <[email protected]> wrote:
> I came across an interesting routing problem the other day. A section of > the Richardson Highway in Alaska was relocated in 2015 by the Alaska DOT in > anticipation of erosion or flooding by the nearby Delta River. However, the > old highway is still present, is still paved, and is shorter than the new > highway that replaced it. OSM mapper Will Lenz classified the old highway > as a track to "persuade" his GPS's routing algorithm into using the new > section. See the following changeset and the conversation I had with Will > here: http://www.openstreetmap.org/changeset/47049836. > > Clearly, the old highway is not a track using the Wiki's definition. I > might be tempted to tag it as highway=unclassified, or perhaps service, but > none of these solutions is ideal. Will's idea works but is not, strictly > speaking, proper. > It rather depends on why a router should avoid it. Is it posted 'no thru traffic' while still being the only route to somewhere? (In which case 'access=destination' might cover it.)
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