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On 14/04/2011 11:06, Peter Miller wrote:
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cite="mid:BANLkTi=mBgZ=0k_ySt2ZQBMSudh+9Xd2zQ@mail.gmail.com"
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<div class="gmail_quote">On 14 April 2011 09:59, Steve Doerr <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:doerr.stephen@gmail.com">doerr.stephen@gmail.com</a>></span>
wrote:<br>
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<div class="im"> On 14/04/2011 08:21, Peter Miller wrote:
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<div class="gmail_quote">On 12 April 2011 15:39, Steve
Doerr <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:doerr.stephen@gmail.com"
target="_blank">doerr.stephen@gmail.com</a>></span>
wrote:<br>
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<div>On 12/04/2011 15:16, Ed Avis wrote:<br>
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<div class="im">
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<blockquote class="gmail_quote" style="margin: 0pt
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204, 204); padding-left: 1ex;">However, one flaw
is that the speed limit sign is not for 'dual
carriageway<br>
limit applies' but rather 'national speed limit
applies'. So we still would not<br>
be tagging exactly what appears on the sign, but
adding some additional<br>
interpretation. I think that is fair enough,
but those who hold to a strict<br>
on-the-ground principle may disagree.<br>
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<blockquote class="gmail_quote" style="margin: 0pt 0pt
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204); padding-left: 1ex;"> I was going to make the
same point.<br>
<br>
maxspeed:derivation=national_dual|national_single|motorway|restricted
?<br>
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<div>I think we are getting there. Two points:<br>
<br>
1) The phase maxspeed:type has already be proposed
and is in use in some places. Can I there suggest
maxspeed:type rather than maxspeed:derivation. I
think that will also be more understandable to
people who's first language is not English.<br>
<br>
2) In place of 'national' can I suggest 'GB:' to fit
with international conventions.<br>
<br>
Which brings one to the following:<br>
<br>
maxspeed:type=GB:dual|GB:single|GB:motorway|GB:restricted<br>
<br>
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But that then negates the point Ed was making and that I was
agreeing with: that the sign says 'national speed limit
applies' for the first two. So my suggestion conveys two
pieces of information in one tag:<br>
<br>
- the road is subject to the national speed limit (because
of a sign);<br>
- the road is dual or single as the case may be (because the
mapper has observed it to be so).<br>
<br>
It also preserves explicitly the distinction between the
national speed limit (60 or 70, special sign) and the 30 mph
'restricted road' limit.<br>
<br>
I don't mind 'type' for 'derivation', and the GB: prefix
makes sense. I believe GB is the ISO code for the UK, not
necessarily restricted to Great Britain (the British Isles
minus the island of Ireland).<br>
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So the proposal is now:<br>
<br>
maxspeed:type=GB:national_single|GB:national_dual|GB:motorway|GB:restricted<br>
<br>
My only comment is that it is a little long,<br>
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Which is perhaps why the much-maligned bot-writer used NSL instead
of national!<br>
<br>
-- <br>
Steve<br>
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