On Mon, Apr 14, 2008 at 4:03 AM, Peter Miller <[EMAIL PROTECTED]> wrote: <snip>
> > I have a few specific questions/observations based on the work I have done > so far. > > 1) The rail network data in the area seems very fragmentary. It may be > valuable for someone with good local knowledge to concentrate on that bit. > Welcome to public transit in the Bay Area. The real system is very fragmentary with poor coverage... > > 2) I have cleaned up and completed the BART network. I have tagged it > 'subway' which may not be ideal, possibly 'metro' would be better. I am > also > not clear if it shares track with Union Pacific through Oakland down to > Hayward. Also, if I say the subway is in a tunnel it is not rendered at > all > in Osmarender. Currently it is tagged with layer=-1 without a tunnel tag > for > the underground bits. Feel free to improve what I have done. > 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. <snip> > 4) Nearly all the tiger roads are tagged as 'residential' by default. It > would be very useful to have a mapping of terminology between US names > 'interstate' etc, and the OSM ones. I assume 'motorway' = 'interstate'. > How > should 'trunk' be interpreted for the USA? What about Primary, secondary > etc?. I suggest that you folk update the map features with your > recommendations and ensure consistency across the USA. > 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 :-) Karl
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