[OSM-talk] What's the policy on unsurveyed roads from imagery?

[Martin Koppenhoefer]

2009/12/27 Stephen Hope <slhope at gmail.com>

> 2009/12/27 John Smith <deltafoxtrot256 at gmail.com>:
> > In Australia there is this legacy speed limit sign for people with
> > racing licenses that they can drive any speed they wish, everyone else
> > is limited to 100, how exactly do you map that? (and I saw one such
> > sign only the day before yesterday).
> >
>
> Umm, actually that one's a bit of an urban myth.  The sign (and it's a
> UN standard sign, not just Australian) means "end of local speed
> limits, back to State/Country default speed limit."  The racing
> licence thing comes from very old rule in NSW where they didn't
> enforce the limit (for anybody) as long as you were not driving at
> "excessive or dangerous" speeds, and no longer applies.  Somebody once
> used the "I'm a racing driver, it's not excessive for me" excuse and
> got off.
>
> As long as you know the state default speed limit, this is easy to
> tag.  It is exactly the same as a sign with that limit.
>

in Germany there is indeed no speed limit ("Ende aller Streckenverbote"
translates to "end of all restrictions") after this sign (on motorways and
dual cariageways outside town limits), so there was a proposal for a tag
some time ago, which was strongly rejected:
http://wiki.openstreetmap.org/wiki/Proposed_features/maxspeed_none

see the discussion page for more info.

cheers,
Martin
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