On 26/01/2016 8:23 PM, Richard Fairhurst wrote:
Hi all,

At present there is no documented standard for tagging highway shoulders.

We have http://wiki.openstreetmap.org/wiki/Shoulder with shoulder=yes|no, which has been in 'draft (under way)' since 2010. In Australia, cycleway=shoulder appears also to be used.

Taginfo stats are:
    shoulder = *            7120, of which:
        shoulder = no        3230
        shoulder = yes        2743
        shoulder = right    964
    shoulder:width = *        1794
    shoulder:right = *        1047
    width:shoulder = *        843
    cycleway = shoulder    502

There are several gazillion miles (approximate value) of roads with shoulders around the world. We should have a way to tag them.

I'd therefore suggest simply formalising the most popular existing usage and the one on the wiki page - that is, shoulder=yes|no. As a default, I'd suggest shoulder=yes is presumed as the most common real-world situation, i.e.:

    "A paved shoulder, wide enough to be used as an emergency
     refuge for cars, and for through passage by bicycles."

From my travels .. I'd say the most frequent (most miles) case is shoulder=no. Of course this could be made sensitive to the highway classification .. motorways usually have a shoulder, driveways don't.

(Narrow shoulders can of course be tagged with shoulder:width, gravel ones by shoulder:surface, and so on.)

There are of course many refinements one could imagine, for peak-hour shoulder running, buses, etc. But since "the perfect is the enemy of the good" etc., I'd like to get the basic shoulder=yes|no agreed first.

Speak now or forever hold your peace!
Good Luck.

cheers
Richard

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