[OSM-talk] Key:layer update

[Richard Z.]

On Sun, Mar 09, 2014 at 11:49:17AM +0100, JB wrote:
> Hello,
> I globally agree, except here:
> >Explicit layer=0 seems to be deprecated now.
> Would you deprecate oneway=no, cycleway=no, horse=no for the same reason?
> We had a similar discussion on talk-fr a few weeks ago. layer=0 may
> be useless for the processing systems, but remains usefull for the
> contributor, disambiguating situations with multiple and complex
> crossings.

it was not my idea to deprecate layer=0 and I have no strong opinion on
this. So far the page says "should not be used explicitly" so we can add
some text that it may be appropriate in very complex situations.

I think this is somewhat different from oneway=no and similar.. which 
are a bit of a problem on its own. Not long ago I found a 3 mile long 
desert track somewhere on the Arab Peninsula with the attribute bridge=no.

Richard