<html><head/><body><html><head><meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /></head><body text="#000000" bgcolor="#FFFFFF"><div class="gmail_quote">Roger Calvert <roger@rogercalvert.me.uk> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
As far as I can see, the only way of solving this for single
carriageway roads is to introduce modified tags along the lines of
maxspeed:northbound (or south-, east- or westbound). Either
direction on any road segment can be matched to one of these, and
most (but not all) can be matched to two.<br />
<br />
Roger<br />
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<div class="moz-cite-prefix">On 23/01/2013 11:13, Richard Hartmann
wrote:<br />
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<div dir="ltr">On Tue, Jan 22, 2013 at 2:29 PM, Philip Barnes <span dir="ltr"><<a moz-do-not-send="true" href="mailto:phil@trigpoint.me.uk" target="_blank">phil@trigpoint.me.uk</a>></span>
wrote:<br />
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<p style="margin:0px;text-indent:0px"><span style="font-family:NokiaPureTextLight"> You would
only need to do that on a single carriageway road.
The A995 is dual-carriageway so its just a case of
tag each carriageway with its speed limit.</span></p>
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<div style="">Indeed. Thanks for pointing that out.</div>
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<p style="margin:0px;text-indent:0px"><span style="font-family:NokiaPureTextLight">I have
never seen a single carriageway road with
different limits in each direction.</span></p>
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<a moz-do-not-send="true" href="http://www.openstreetmap.org/?lat=48.76677766442299&lon=9.183344542980194&zoom=18">http://www.openstreetmap.org/?lat=48.76677766442299&lon=9.183344542980194&zoom=18</a><br />
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That bend is 40 km/h going south, 50 km/h going north.</div>
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<div style="">Richard</div>
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</blockquote>
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<div class="moz-signature">-- <br />
<hr style="width:50%;float:left;" /><br />
Roger Calvert<br />
<hr style="width:50%;float:left;" /></div>
<p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre style="white-space: pre-wrap; word-wrap:break-word; font-family: monospace; margin-top: 0px"><hr /><br />newbies mailing list<br />newbies@openstreetmap.org<br /><a href="http://lists.openstreetmap.org/listinfo/newbies">http://lists.openstreetmap.org/listinfo/newbies</a><br /></pre></blockquote></div><br clear="all">Yes, but if you have a winding road, you will have to split it up into many small segments, with a different set of speed limit tags every time the road curves. You will also have ambiguous cases (if the road runs northeast to southwest, do you use the north/south pair of speed limit tags, or the east/west pair of tags)?<br>
<br>
-- <br>
John F. Eldredge -- john@jfeldredge.com<br>
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria<br>
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