[OSM-talk] [Tagging] - RFC - Motorway_link implies oneway=??

[Alex Mauer]

Ian Dees wrote:
> there's got to be 
> somewhere on this great planet of ours where a highway=motorway_link or 
> highway=motorway is not oneway=yes, but it is safe to assume that when 
> highway=*, motorcar=yes is always safe to assume.

Oh, there definitely are places where highway=motorway is not oneway=yes 
-- but in those cases they can be tagged with oneway=no.  That does put 
a greater burden of tagging on people in those areas, but IMO it's 
better to place that burden on 5% or so of mappers than to put it on 
100% of mappers.

highway=* isn't always motorcar=yes, either.  There's a table at 
http://wiki.openstreetmap.org/index.php/OSM_tags_for_routing/Access-Restrictions 
which describes the restrictions.  (Note: I did not create it.)