On 2014-06-15 20:44, Peter Wendorff wrote : > Hi Andreas, > IMHO > - access=emergency is a basic access restriction, which states that only > emergency vehicles are allowed here (unless otherwise specified). According to Key:access <http://wiki.openstreetmap.org/wiki/Key:access>, there is no access=emergency, only emergency=yes > - emergency=yes is such an "otherwise specification" where the main > access rule is different, it's simply another way to define the same. *emergency=yes* allows emergency vehicles indeed, but does not exclude other vehicles. It's unfortunately a very common routing mistake that misleads the very logical GPSes. To exclude all other vehicles, one must add (see key=access category tree <http://wiki.openstreetmap.org/wiki/Key:access#Land-based_transportation>) access=no Or, to exclude just motor vehicles: motor_vehicle=no etc. That is, a higher level (or other) "no". Routers will obey those tags. > - service=emergency_access sounds more as a subtag for highway=service > and my interpretation would assume this is a service way with the > primary purpose to allow emergency vehicles to access another facility > (be it a building, highway or anything else). The status of highway=service <http://wiki.openstreetmap.org/wiki/Tag:highway%3Dservice> is very ill defined regarding to routing. It indicates that the road is for loosely defined special usage. service=* is supposed to indicate which (only one!). Routing is supposed to deduct country dependent access rules but I doubt it does. I think that access= + emergency=yes suffice to characterize such roads indubitably.
Cheers, André. > service=emergency_access might allow usage by others, but usually > forbids e.g. parking (if it's an access road to a building) > > access=emergency should usually be implicit on any other access and > therefore might usually refer to ways where only emergency vehicles are > allowed (although e.g. highway maintenance vehicles and similar stuff > might be allowed to share these ways). > > regards > Peter > > Am 15.06.2014 17:07, schrieb Andreas Goss: >> So I got a bit of work done with the WikiProject Emergency Cleanup, but >> now I'm not really sure about emergency access. >> >> - Is there a difference between service=emergency_access, >> access=emergency and emergency=yes(on roads)? >> >> - What exactly is their meaning? Is it only for designated emergency >> access roads (https://de.wikipedia.org/wiki/Feuerwehrzufahrt)? >> >> - Are there even any roads where emergency vehicles usually aren't >> allowed to drive and you then have to indicate if they are allowed? Like >> when would you use emergency=no ? >> >> - Or was it meant for roads, which bascially had access=no, but allowed >> for only emergency vehicles? >> >> >> The only thing I could find apart from a mention on the access=* page >> was this proposal: >> http://wiki.openstreetmap.org/wiki/Proposed_features/emergency_vehicle_access >> >> >> >> I'm considering starting a proposal for something like >> access:emergency=yes/no/designated/..., because using access=* means you >> can't combine it with a different access attribute and emergency=yes >> says very little and is also used on other things. >> >> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging
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