[Tagging] Subway vs light rail

Fernando Trebien fernando.trebien at gmail.com
Sun Jan 7 11:03:29 UTC 2018


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 <osm-ml at michreichert.de> 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
>
>
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-- 
Fernando Trebien
+55 (51) 9962-5409

"Nullius in verba."



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