Re: [Tagging] emergency bays - which side?
for bus_bays the wiki defines left/right/both (https://wiki.openstreetmap.org/wiki/Key:bus_bay) It makes sense to use the same I think. m. On Sun, Dec 31, 2017 at 10:47 AM, Volker Schmidt wrote: > The tag highway=emergency_bay as node is in use 3700 times, even though it > is still only a proposal. > > How do I indicate the side of the road the EB is serving in the case of a > bidirectional road. > I could see two valid approaches: > direction=forward|backward > emergency_bay=right|left > It seems that none of these has been used so far, most likely because the > mapping so far has only regarded one-way roads. > > Volker > > ___ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] emergency bays - which side?
For bus bays the way is split twice, creating an extra segment. At that point it's easy to use left/right/both. This is the same principle that is used when tagging turn lanes near crossings. I'm sure there are people who don't like splitting ways in ever smaller pieces, but that ship has sailed. Polyglot 2018-01-01 9:33 GMT+01:00 Marc Gemis : > for bus_bays the wiki defines left/right/both > (https://wiki.openstreetmap.org/wiki/Key:bus_bay) > It makes sense to use the same I think. > > m. > > On Sun, Dec 31, 2017 at 10:47 AM, Volker Schmidt > wrote: > > The tag highway=emergency_bay as node is in use 3700 times, even though > it > > is still only a proposal. > > > > How do I indicate the side of the road the EB is serving in the case of a > > bidirectional road. > > I could see two valid approaches: > > direction=forward|backward > > emergency_bay=right|left > > It seems that none of these has been used so far, most likely because the > > mapping so far has only regarded one-way roads. > > > > Volker > > > > ___ > > Tagging mailing list > > Tagging@openstreetmap.org > > https://lists.openstreetmap.org/listinfo/tagging > > > > ___ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] emergency bays - which side?
Emergency bays and bus bays are physically very similar, i.e. a short piece of an additional lane on a road. Unfortunately the two tags highway=emergency_bay and bus_bay=both|left|right use very different approaches to describing essential the same physical arrangement. bus_bay=both|left|right highway=emergency_bay wiki page https://wiki.openstreetmap.org/wiki/Key:bus_bay http://wiki.openstreetmap.org/wiki/Tag:highway%3Demergency_bay node no (according to the wiki page) yes (in reality there are few cases of bus_bay=yes with highway=bus_stop) yes node example http://www.openstreetmap.org/node/2134413721 http://www.openstreetmap.org/node/1690562827 http://www.openstreetmap.org/node/4892296128 http://www.openstreetmap.org/node/3246948212 way yes yes way example http://www.openstreetmap.org/way/253182588 http://www.openstreetmap.org/way/460019134 left|right|both yes (mandatory) not foreseen in the wiki page node: 55 way: 1715 node: 3710 way: 642 I personally like the bus_bay approach better, but I see the drawback of having to split the road way twice for every occurrence, when you use the type:way approach The emergency_bay approach is easier to map if you only consider the node approach and only on one-way streets, assuming that you can define the default as being on the right-hand side for right-hand-drive countries (and symmetrically for the left-hand ones). For dual lane traffic or for emergency bays on the "wrong" side of the road you need an agreed way to define which side of the road. I do not like the way approach of the emergency_bay tagging, as it actually requires a separate way, which does not reflect the reality on the ground. As both tags are so far relatively low-use, it may not be too late to unify the bus_bay and emergency_bay mapping approaches. Volker > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] emergency bays - which side?
Another one that is similar is passing place: https://wiki.openstreetmap.org/wiki/Tag:highway%3Dpassing_place Seems to be rather similar to emergency_bay in tagging methodology. m. On Mon, Jan 1, 2018 at 1:19 PM, Volker Schmidt wrote: > Emergency bays and bus bays are physically very similar, i.e. a short > piece of an additional lane on a road. > > Unfortunately the two tags highway=emergency_bay and > bus_bay=both|left|right use very different approaches to describing > essential the same physical arrangement. > > > bus_bay=both|left|right > > highway=emergency_bay > > wiki page > > https://wiki.openstreetmap.org/wiki/Key:bus_bay > > http://wiki.openstreetmap.org/wiki/Tag:highway%3Demergency_bay > > node > > no (according to the wiki page) > yes (in reality there are few cases of bus_bay=yes with highway=bus_stop) > > yes > > node example > > http://www.openstreetmap.org/node/2134413721 > > http://www.openstreetmap.org/node/1690562827 > > http://www.openstreetmap.org/node/4892296128 > > http://www.openstreetmap.org/node/3246948212 > > > way > > yes > > yes > > way example > > http://www.openstreetmap.org/way/253182588 > > http://www.openstreetmap.org/way/460019134 > > left|right|both > > yes (mandatory) > > not foreseen in the wiki page > > > node: 55 > > way: 1715 > > node: 3710 > > way: 642 > > I personally like the bus_bay approach better, but I see the drawback of > having to split the road way twice for every occurrence, when you use the > type:way approach > > The emergency_bay approach is easier to map if you only consider the node > approach and only on one-way streets, assuming that you can define the > default as being on the right-hand side for right-hand-drive countries (and > symmetrically for the left-hand ones). For dual lane traffic or for > emergency bays on the "wrong" side of the road you need an agreed way to > define which side of the road. I do not like the way approach of the > emergency_bay tagging, as it actually requires a separate way, which does > not reflect the reality on the ground. > > As both tags are so far relatively low-use, it may not be too late to > unify the bus_bay and emergency_bay mapping approaches. > > Volker > > > >> > > ___ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] emergency bays - which side?
Similar tagging scheme, yes, but with a big functional difference, that is, they appear on single-lane roads and can be used in both directions, independently of the side of the road they are on. My starting question was specifically for emergency bays on two-lane roads where, typically, you could not easily cross to the other side in case you have a technical problem. They are frequent here on heavy-traffic, two-lane (not dual-carriageway!) roads. They are also typically not placed in pairs on both side of the road across from each other, but staggered. Volker On 1 January 2018 at 14:05, Marc Gemis wrote: > Another one that is similar is passing place: https://wiki. > openstreetmap.org/wiki/Tag:highway%3Dpassing_place > Seems to be rather similar to emergency_bay in tagging methodology. > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
