[Tagging] Unsuitable?

[Pieren]

On Wed, Jan 8, 2014 at 2:24 PM, Martin Vonwald <imagic.osm at gmail.com> wrote:

> Since when is "unsuitable" an accepted value for the access keys? I always
> thought that the access keys describe legal restrictions.

It says "usage is discouraged (e.g. HGVs on narrow lanes) . Often
marked by a traffic sign "

So maybe, there is a traffic sign for "unsuitable" which is different
from "no". An example would be appreciated.

Pieren