On Thu, Mar 17, 2011 at 8:55 AM, Sam Kuper <[email protected]> wrote:
> A pavement is a sidewalk, yes. > Now, I see from your link that pedestrianised streets and squares are > handled by OpenStreetMap, but I don't see any examples of roads having > pavements alongside them. As per the tag, a road should be tagged with a sidewalk, and the location of the sidewalk is part of the tag (left, right, both). > The implication is that as far as OpenStreetMap is > concerned, pedestrians share the road surface equally with cars, trucks, > bikes, buses, motorbikes and so on, which is not normally the case in the > countries I've visited. In the countries I've visited, pedestrians normally > walk on pavements alongside the road surface, while the other vehicles I've > mentioned use the main road surface. http://wiki.openstreetmap.org/wiki/Key:sidewalk Whether folks use the sidewalk tag or a separate way is up to them. >> http://wiki.openstreetmap.org/wiki/Crossing > > Ah, that's good to know. I didn't see any marked on the area of OSM that I > looked at, where there should have been some, but presumably they just need > to be added. Let me suggest familiarizing yourself with the wiki. >> > road widths >> >> Road widths are something we've traditionally not put on the map >> because OSM is more focused on toplogical connectivity than actual >> road width. We do have the number of lanes, so one can extrapolate an >> approximate width from this value where available. > > This doesn't really make sense to me. After all, the shape of a pavement > isn't a line, and nor is the shape of a road. Both are areas that can be > traversed more or less freely, as long as one doesn't obstruct them nor (in > some cases) travel in the wrong direction on certain parts of them. > A width, expressed in a standard unit of length, I can understand. But what > counts as a lane? http://wiki.openstreetmap.org/wiki/Lane > For instance, on a road in the UK where I lived for some years, there were > typically cars parked (entirely legally) on both sides, which left room for > only one car abreast to drive along the road: if two cars were driving along > the road and wanted to pass each other, then one of the cars had to pull > into a parking space to let the other one past. Was it a designated parking lane? http://wiki.openstreetmap.org/wiki/Proposed_features/parking:lane > The road was therefore wide enough for three cars abreast, but since the > cars on either side of the road were normally stationary (parked), that sort > of reduced the effective width of the road to one car. How many lanes would > this road have, as far as OSM is concerned? One, or three? This is a question for the tagging list, or help.osm.org There's also the option to just enter in the width: http://wiki.openstreetmap.org/wiki/Key:width But you'll find most people don't do that. You're free to add it if you like. >> > house numbers >> >> http://wiki.openstreetmap.org/wiki/Addresses > > It's nice to see the examples in Karlsruhe. However, in the UK I haven't yet > found any areas I'm familiar with that have buildings individually drawn on > the map with addresses assigned. > Are there plans to import addresses in bulk, or is it expected that these > will be inputted by hand? How were the examples around this location > created? http://www.openstreetmap.org/?lat=49.030752&lon=8.361616&zoom=18&layers=B000FTF Addresses databases are often license restricted, so must often be collected manually, except in rare exceptions like Washington, DC, San Francisco, and I believe Portland. >> > parking restrictions >> >> http://wiki.openstreetmap.org/wiki/Parking >> (read the section on the access tag) > > Thanks. > In the UK, there are several different designations that local councils > apply to given stretches along the sides of given roads. For instance, they > may have double red lines, single red lines, double yellow lines, single > yellow lines, parking bays of various kinds (pay & display; residents only; > disabled only; etc), any of a number of other markings, or no markings at > all. Typically, councils will publish information about at least some of > these stretches on their websites, to help people plan their journeys. > It would be very useful to be able to represent this information in OSM. Can > it be done? Those sound like parking lanes, see above. >> > speed limits >> >> http://wiki.openstreetmap.org/wiki/Key:maxspeed > > I downloaded a .osm file for an area of London I know quite well, and it > contained no maxspeed tags even though most of the streets in it are subject > to an implicit 30mph speed limit. > Are there plans to automatically tag urban streets with national urban > street limits, or is this something that users are expected to do manually > for the entire world? Automated edits like the type you've outlined have been disruptive to the project in the past (ie mass errors) and it's much harder to identify a mistake in data than it is to identify missing data, so personally I'd be disinclined to support such a tagging. But if you want to add it to your routing rules, go ahead. You'll do yourself a great favor by reading the wiki, and checking out help.openstreetmap.org because a vast majority of my answers have been going to the wiki and doing a search. Then if you have specific questions, I'd suggest asking on help.osm or else if it's something like your lane question, the tagging list might be a better forum. - Serge _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
