[OSM-talk] [Tag] "Ref" in "link"

Ben Laenen benlaenen at gmail.com
Wed Jun 24 18:41:29 BST 2009


Xav wrote:
> Hi all,
>
> On this page :
> http://wiki.openstreetmap.org/wiki/Tag:highway%3Dmotorway_link
> it is implicitly written that the "ref" of a "link" should be the reference
> of the road from which the link depends. For example, a "motorway_link"
> to/from the motorway "A 1" will be referenced as "A 1".
>
> Generally, this schema doesn't work. Indeed, links depends of TWO roads,
> and regularly with two roads of the same type. Examples in France : link
> between the "A 11" and the "A 10" near Paris, or a lot of links between
> secondary roads.
>
> What do you think about referencing the links with the exit reference ? I
> do not know how it works in other countries, but in France, every exit
> usually has a reference.


In Belgium those links all have their own road numbers. The A1 road for 
example would have a link with reference number "A.001.123" (and service roads 
which aren't accessible have references like "A.001.123.S001") -- and those 
road numbers are signed.

So either using the reference from the main road it links to, or using the 
motorway exit number wouldn't work here.

Ben





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