[OSM-talk] Using destination_sign relations for complex exit ramps?

[Roy Wallace]

> I want to be able to
> capture all of that information in OpenStreetMap so that a theoretical
> routing agent can say, e.g., "Take exit 91 to the right, then take exit
> 91A to the left."
>
>  [0]: I-70 westbound exit 91 http://osm.org/go/ZZd8vPYT
>
> The IRC discussion pointed out that this falls more or less into the same
> domain as the destination_sign relation.

I don't spend a lot of time mapping complex junctions, but here is my
two cents anyway:

What if you used name="Exit 91" and name="Exit 91A" for the two
motorway_link's? Are they really the "name" of those sections of
tarmac? I reckon it may well be, for all intents and purposes... You
could, on the other hand, argue that an "exit" conceptually can only
apply to a single node and not a way segment - but I'm not so sure.
Just another option to consider, if you haven't already. Cheers.