Richard Fairhurst wrote: > Wow. The OSM wiki never ceases to disappoint with its limitless provision > of confusing, badly written, half thought-out crap. > > So we have a page that says "implies access=no" and then happily > contradicts itself by saying "an entrance that can be opened or closed to > get through the barrier". That's "can be opened" (access=yes), not "can't > be opened" (access=no). > > It's probably just as well the wiki documents, not defines. And given the > vast preponderance of highway=gate nodes within (say) highway=footway ways, > the wiki docs look pretty unambiguously wrong. > > Anyway, follow-ups to tagg...@.
The problem with it as I see it is that it makes use of access tags to define what can pass. I'm pretty sure that right now a lot of barriers are only tagged with bicycle=yes while at the same time there's nothing at those barriers that prevent access to mopeds or even motorcycles, or horses. So for barriers we want something that describes the physical state of the barrier (and specifically how big the openings are). And this should be something general like "pedestrians only" (and this would exclude e.g. pushchairs), "small traffic" (pedestrians, bicycles, mopeds, etc), and "wide traffic" (cars and everything else), and an extra limitation on horse drivers and some other ones (needs to be thought out first obviously). After all, if you get off your bicycle, you become a pedestrian, but some of these barriers don't allow you to get a bicycle to the other side even with a lot of acrobatics, something your bicycle router might be interested in if you tell it to allow small parts to be walked next to your bicycle. And if there are explicit signs limiting the traffic to specific vehicle classes, *then* you should use access tags. Furthermore, in many cases, extra tags aren't really needed anyway on the barrier nodes, the tags on the paths or roads behind the barrier usually have all the needed tags. If a gate is always closed then a road behind it may often be access=private already. So my idea: define sensible physical defaults for each barrier type (barrier=bollard blocks wide traffic for example). And if it's not really possible to make a good default (like barrier=gate) then by default allow everything that's allowed on the highways at both sides of that gate. Greetings Ben _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
