[talk-au] Interchanges

Ben Kelley ben.kelley at gmail.com
Sat Sep 16 07:25:37 UTC 2017

I agree. highway=motorway_junction is to mark where you exit the motorway.

An aside: Exits from the Hume Motorway/M5 have exit numbers now as you
approach Sydney.

   - Ben.

On 16 Sep 2017 4:58 p.m., "Andrew Harvey" <andrew.harvey4 at gmail.com> wrote:

In Sydney there are a few named interchanges which have a mix of tags
(highway=motorway_junction, tourism=attraction, place=locality), they
are all the same thing so I'd like to determine the best tags to use.

Calga Interchange

Sir Roden Cutler VC Memorial Interchange

Light Horse Interchange

Pearces Corner

Top Ryde Junction

Meccano Set

The wiki page for highway=motorway_junction
is more about exit points along a motorway which may have a name or
number (ref), not so much for an interchange. So I don't think this is
the right tag to use. Plus JOSM warns it must be connected to the way,
which further confirms it's the wrong tag.

The proposed feature highway=junction
looks like it's mapping out interchanges, so it seems like a better
tag, but it is less commonly used and still proposed. I'd prefer to
change them all to highway=junction, and better yet convert them to

I think it's fine to use tourism=attraction where it is such, like
Meccano Set, but it seems a bit of a stretch... Though this shouldn't
be the only tag.

What does everyone else think?

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