[Tagging] Mapping gentle slopes?

Nathan Edgars II neroute2 at gmail.com
Tue Jan 4 15:13:35 GMT 2011

I'm interested in mapping which direction of a street slopes down
(mainly for cycling purposes). The contour lines used by OpenCycleMap
don't have nearly enough resolution for this, yet many streets have a
noticeable slope (which can also be seen in how the roadside drains
are designed). Is there a way to tag that a street is downhill in the
forward or backward direction?

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