[OSM-talk] Motorways and Motorway_link

[Richard Bullock]

>
> (Trim the crap and return to sanity ;) )
> The definition in the UK would mean that motorway and motorway_link ARE 
> always
> one way and anything that needed to be two way would not be flagged as
> 'motorway' but no doubt parallels in other countries are not quite so 
> clear cut?
> Perhaps the OSM definition of motorway should include the restriction of a
> single direction carriageway and move anything else to 'trunk'?
>
The UK definition is any road defined as a motorway. Anything beyond 
http://de.wikipedia.org/wiki/Bild:Zeichen_330.svg this sign is a motorway.

In the UK we even have single-carriageway sections of motorway.

e.g. 
http://www.openstreetmap.org/?lat=53.71933&lon=-2.63209&zoom=16&layers=B000FTF 
here

It's not a sliproad - it's really single carriageway - and it has 
blue-backed motorway signs. It has all of the usual motorway regulations 
applying - no cycles, no pedestrians, no learners - you can drive a car 
legally at 70mph on it (but given the length of it, it's only easy to do so 
in the downhill direction with most cars) etc.

There's another one here - part of the A601(M)
http://www.openstreetmap.org/?lat=54.12654&lon=-2.74652&zoom=16&layers=B000FTF

These should be motorways on OSM - they are in reality. Personally, I tag 
motorways and motorway_links with oneway=yes if they are oneway. That way we 
don't go making any false assumptions.