[Talk-us] Freeway exit tagging

Paul Johnson baloo at ursamundi.org
Fri Sep 2 17:23:52 UTC 2016

On Fri, Sep 2, 2016 at 12:18 PM, David Mease <meased3 at gmail.com> wrote:

> I thing my reservations about this type of tagging is that this may be
> "tagging for the router".

On some level, all of it is.

> I still view the turn:lanes scheme as a (probably incomplete) way of
> describing complex intersections. Tagging simple intersections with this
> scheme just to get a routing engine to display the correct arrow icon is a
> waste of time.

A sufficiently smart router could potentially use the info to determine
whether or not it's plausible to make Y number of lane changes of X
distance to make a turn and route accordingly.
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