On Mon, Apr 14, 2008 at 4:03 AM, Peter Miller <<a href="mailto:peter.miller@itoworld.com">peter.miller@itoworld.com</a>> wrote:<br><div class="gmail_quote"><div><snip> <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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I have a few specific questions/observations based on the work I have done<br>
so far.<br>
</blockquote><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
1) The rail network data in the area seems very fragmentary. It may be<br>
valuable for someone with good local knowledge to concentrate on that bit.<br>
</blockquote><div><br>Welcome to public transit in the Bay Area. The real system is very fragmentary with poor coverage... <br>
</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
2) I have cleaned up and completed the BART network. I have tagged it<br>
'subway' which may not be ideal, possibly 'metro' would be better. I am also<br>
not clear if it shares track with Union Pacific through Oakland down to<br>
Hayward. Also, if I say the subway is in a tunnel it is not rendered at all<br>
in Osmarender. Currently it is tagged with layer=-1 without a tunnel tag for<br>
the underground bits. Feel free to improve what I have done.<br>
</blockquote><div><br>I agree, "metro" or equivalent would be better. It's really only a subway in downtown Oakland and SF, and obviously in the trans-bay tube. I'm nearly 100% positive that it doesn't share track with UP. I think it has its own gauge and everything.<br>
<br><snip><br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">4) Nearly all the tiger roads are tagged as 'residential' by default. It<br>
would be very useful to have a mapping of terminology between US names<br>
'interstate' etc, and the OSM ones. I assume 'motorway' = 'interstate'. How<br>
should 'trunk' be interpreted for the USA? What about Primary, secondary<br>
etc?. I suggest that you folk update the map features with your<br>
recommendations and ensure consistency across the USA.<br>
</blockquote><div><br>There has been a bit of discussion about this, but there doesn't seem to be any agreement and the Wiki is a mess with regards to this, with conflicting information on various pages. Part of the problem comes from us poor US residents trying to map our road system to the UK/European standard where many of us have not spent a lot of time (or in my case, I didn't pay attention to the road classifications). I would say in general, interstate=motorway, US highway=trunk or primary (or maybe motorway in certain cases), state highway=primary or secondary, county highway=secondary or tertiary, road through commercial district=unclassified, and residential=residential :-)<br>
</div></div><br>Karl<br>