Re: [Tagging] Subway vs light rail
Pardon me if I expressed myself poorly. This mapper changed both the route=* tag of the relation and the railway=* tag of all its members from light_rail to subway. On Sun, Jan 7, 2018 at 8:26 AM, Michael Reichert wrote: > Hi Fernando, > > Am 2018-01-04 um 13:32 schrieb Fernando Trebien: >> A German mapper just changed the rail type of a line [1] in my area >> (southern Brazil) from light_rail to subway. >> >> Here those trains run on the surface (contrary to most subways) and >> have no at-grade intersections with other traffic (contrary to most >> light rail systems). Also, metro systems like this are usually >> considered "heavy rail," [2] so it really doesn't look like this >> should be "light rail". It is also not simply railway=rail since it is >> not the highest level of rail service and it only carries passengers. >> >> […] >> >> [1] http://www.openstreetmap.org/relation/420335 > > The relation you refer to is now a public transport version 2 relation. > light_rail is no valid value for route=* in this schema. It is only a > valid value for railway=* (the infrastructure). > > Subways don't have to run underground. There are lots of subway systems > with long sections outside tunnels, either elevated on bridges or just > on ground level because it is cheaper to build and maintain and space > was available. The key feature of railway=subway is the separation from > other traffic and the absence of at-grade intersections. > > Best regards > > Michael > > > -- > Per E-Mail kommuniziere ich bevorzugt GPG-verschlüsselt. (Mailinglisten > ausgenommen) > I prefer GPG encryption of emails. (does not apply on mailing lists) > > > ___ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > -- Fernando Trebien +55 (51) 9962-5409 "Nullius in verba." ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Subway vs light rail
Hi Fernando, Am 2018-01-04 um 13:32 schrieb Fernando Trebien: > A German mapper just changed the rail type of a line [1] in my area > (southern Brazil) from light_rail to subway. > > Here those trains run on the surface (contrary to most subways) and > have no at-grade intersections with other traffic (contrary to most > light rail systems). Also, metro systems like this are usually > considered "heavy rail," [2] so it really doesn't look like this > should be "light rail". It is also not simply railway=rail since it is > not the highest level of rail service and it only carries passengers. > > […] > > [1] http://www.openstreetmap.org/relation/420335 The relation you refer to is now a public transport version 2 relation. light_rail is no valid value for route=* in this schema. It is only a valid value for railway=* (the infrastructure). Subways don't have to run underground. There are lots of subway systems with long sections outside tunnels, either elevated on bridges or just on ground level because it is cheaper to build and maintain and space was available. The key feature of railway=subway is the separation from other traffic and the absence of at-grade intersections. Best regards Michael -- Per E-Mail kommuniziere ich bevorzugt GPG-verschlüsselt. (Mailinglisten ausgenommen) I prefer GPG encryption of emails. (does not apply on mailing lists) signature.asc Description: OpenPGP digital signature ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Subway vs light rail
> In terms of verifiability, would you map a metro system consisting of > a single line that runs above the ground with full grade separation as > a subway in OSM? That depends. Is it legally a subway/metro/u-bahn? Is it marketed as a metro/subway/underground? E.g. https://en.wikipedia.org/wiki/Line_3_Scarborough - I would map this as a metro if it were marketed as a metro line. The Rotterdam "metrolijn E" (https://www.openstreetmap.org/relation/2777287#map=12/51.9797/4.4114) consists of a part Slinge-Centraal station that is "true underground", and a former rail line converted to light rail. On the northern part of the rail line, runs a combination of 3 vehicle types - narrow, low-floor light rail vehicles, that continue into The Hague on the tram network - wide, high-floor "light rail" vehicles, specially for this line - wide, high-floor lines that run on the rest of the Rotterdam rail network and are technically exactly the same as the light rail vehicles, just in other colours. Because it has grade crossings, it's tagged as light rail, otherwise I'd certainly tag it as metro. ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Subway vs light rail
In terms of verifiability, would you map a metro system consisting of a single line that runs above the ground with full grade separation as a subway in OSM? On Thu, Jan 4, 2018 at 1:37 PM, Martin Koppenhoefer wrote: > > > 2018-01-04 13:32 GMT+01:00 Fernando Trebien : >> >> Do you think we could clarify on >> the wiki that there may exist subway systems that run entirely on the >> surface? > > > > If you believe clarification is needed, then go ahead, ok by me, especially > if you write subway "lines" and not "systems". > > Cheers, > Martin > > ___ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > -- Fernando Trebien +55 (51) 9962-5409 "Nullius in verba." ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Subway vs light rail
2018-01-04 13:32 GMT+01:00 Fernando Trebien : > Do you think we could clarify on > the wiki that there may exist subway systems that run entirely on the > surface? If you believe clarification is needed, then go ahead, ok by me, especially if you write subway "lines" and not "systems". Cheers, Martin ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
Re: [Tagging] Subway vs light rail
Look up the LRTA's list (it is the office that determines whether a rapid transit is a light rail or metro). All other rapid transit systems are considered subways. 04-01-2018 15:32 tarihinde Fernando Trebien yazdı: > A German mapper just changed the rail type of a line [1] in my area > (southern Brazil) from light_rail to subway. > ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
[Tagging] Subway vs light rail
A German mapper just changed the rail type of a line [1] in my area (southern Brazil) from light_rail to subway. Here those trains run on the surface (contrary to most subways) and have no at-grade intersections with other traffic (contrary to most light rail systems). Also, metro systems like this are usually considered "heavy rail," [2] so it really doesn't look like this should be "light rail". It is also not simply railway=rail since it is not the highest level of rail service and it only carries passengers. Grade separation seems to be the main distinguishing criteria as per what's written in the wiki [3][4][5]. Do you think we could clarify on the wiki that there may exist subway systems that run entirely on the surface? [1] http://www.openstreetmap.org/relation/420335 [2] https://en.wikipedia.org/wiki/Light_rail [3] https://wiki.openstreetmap.org/wiki/Key:railway [4] https://wiki.openstreetmap.org/wiki/Tag:railway%3Dlight_rail [5] https://wiki.openstreetmap.org/wiki/Tag:railway%3Dsubway -- Fernando Trebien +55 (51) 9962-5409 "Nullius in verba." ___ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
