[OSM-talk] [tagging] Feature Proposal - RFC - (PSV_directions)

[Ben Laenen]

On Thursday 26 June 2008, Charlie Echo wrote:
> The proposal you mention is a radical change in the way we would tag.
> We would move from tag=value to tag:subtag:subtag=value.

Sure, it's very different to current tagging, but we need to think about 
more complex access restrictions.

The proposal isn't perfect either, one can't for example say that goods 
vehicles over 3.5 tons are not allowed except for loading and unloading 
(a restriction that appears a lot over here). The problem in that 
restriction being that it depends on more than one property: goods 
vehicles (buses are always allowed for example), maximum weight 3.5 
tons, and an exception for loading and unloading its goods in the area 
where the restriction applies.

Or what about restrictions applying one direction only, or restrictions 
applying to only one lane in a three lane road?

The ordering problems you mention is another thing. I also can see lots 
of ambiguity issues coming up.

Nevertheless, instead of adding new tags like psv_directions, and after 
that probably moped_directions, bus_directions, tram_directions, 
motorcycle_directions etc, we should think about a much better tagging 
scheme for this. The proposal I mentioned is a step towards something 
more powerful, but not quite there yet.

So we might start thinking about this once before quickly patching 
current problems with tags like psv_directions :-)

Greetings
Ben