2014/1/13 martinq <osm-mart...@fantasymail.de> > I have interpreted psv (public service VEHICLE), bus and taxi as vehicle > categories in the past, but never required these keys in my area. > So for me an empty taxi is allowed on taxi=yes. >
it is not a question whether it is empty or not (it might be going to pick up someone) but whether it is in service. > > There are two issues, nobody has probably paid attention on so far: > 1) "public service" is not "public transport", as intended by the creators > of the key. So if people make a road cleaning truck or an ambulance a PSV, > then this was maybe not intended, but a result of ambiguous > documentation/naming. > if you look at wikipedia for instance: http://en.wikipedia.org/wiki/PSVthis get's redirected to bus, so my guess is, that the common usage of this term is the same than the definition in OSM and not including all kind of "public" vehicles. Also the approach to mix use (public service/transport) with vehicle type > was probably not the best choice back in the early days. It created the > weird issue of requiring a new category for buses not used for public > transport, since "orthogonal" use and type cannot be freely combined. > this is common in legislation too (two types of buses: the vehicle class and those operating as public transport vehicle). Better backward compatibility I refine my proposal in the other post a > little bit: > 1) Update key hierarchy: > + omnibus Vehicle registered as bus > +++ bus Omnibus vehicle, used for public transport at point of access > 2) Introduce value "public_transport" > omnibus=no & bus=yes can also be expressed as omnibus=public_transport > IMHO we can stick to psv. > 3) Depreciate"psv" (or broaden the meaning to all "public service" > vehicles) > because of the JOSM turn restriction plugin? What about changing that plugin? > 4) Depreciate "tourist_bus": There is no longer the need for tagging both > ("bus=yes" and "tourist_bus=yes") in the case any bus category is meant. It > can be expressed by "omnibus=yes" now. not sure. I introduced this key because of a sign that said explicitly: "tourist_bus=no". Maybe this could be represented by omnibus=no bus=yes (or psv=yes), if these will be introduced and accepted, but as long as they arent I'd keep this key. It is currently used 849 times, it seems to be unambiguous, so no need to deprecate IMHO. cheers, Martin
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