[Tagging] Tagging split exit ramps

Richard Welty rwelty at averillpark.net
Mon May 16 15:45:54 BST 2011

On 5/16/11 10:39 AM, M∡rtin Koppenhoefer wrote:
> isn't this information a router could gain from the data simply by
> looking where the ramp leads to?
yes, a router could. i think that this proposal would be useful
as a way to indicate the text visible on the signs for the ramp
for clear directions, which is how i've been filling out exit_to
for motorway_junctions. that is to say, the router can compute
this, but then it can use the exit_to text on, say, a web page
of directions for the text to use. a router can only guess at
the text on the sign from tracing topology.

the specific problem case brought out by James is one that's
certainly kicking around, and he outlines what seems to me
to be a reasonable approach.


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