Changeset: 49711993
added SVR gauge
Closed by Martin Wynne
Tags
created_by | iD 2.2.2 |
---|---|
host | http://www.openstreetmap.org/edit |
imagery_used | Bing aerial imagery |
locale | en-GB |
Discussion
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Comment from trigpoint
Hi Martin, just wondering why you have changed The Severn Valley from railway=preserved to railway=rail?
It was a perserved railway last time I was there.
Cheers Phil -
Comment from Martin Wynne
Hi Phil,
I was trying to get OSM to show the line through Bewdley Tunnel as a dotted line. If I set railway=preserved it shows the line in pale grey and there is no difference for the track in the tunnel - which looks daft under Birchen Coppice.
I don't think the SVR calls itself a preserved railway any more. It is a primarily a tourist attraction and calls itself a "Heritage Steam Railway". Many other similar lines do the same. (I tried setting railway=heritage and it vanished off the map entirely.) The note for railway=rail says "rails of standard gauge track" which does describe it exactly. I have now tried adding tourism=heritage_steam_railway, which seems to work, so I will add that to more sections.
Looking at some of my photographs of the line from BR days, the line today clearly isn't a preservation of much of that. For example the entire Kidderminster station was built new in the 1980s, and to be a "preservation" of anything it should be a goods yard. Ditto the Engine House and the new work now going on at Bridgnorth. None of that is a preservation of anything, and as the years go by there will be more of the same. "Preservation" was a suitable word to describe the early efforts of the volunteers who rescued the line in the 1960s, but I don't think it fits the line today.
best regards,
Martin.
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Comment from trigpoint
Hi Martin
Thank you for your reply.
Firstly please remember that OSM is primarily a database, which is rendered in many different ways and you seem be changing the tagging to overcome a problem that exists with just one of many renderers. That is called 'tagging for the renderer' which should not be done. If there is a bug in a particular renderer it should be reported to those responsible. In this case OSM Carto on github.
Also please do not take the wording of tags too literally, the wiki states that railway=preserved is 'A railway running historic trains, usually a tourist attraction. They are usually privately owned, preserved and run for railway heritage and/or profit, not necessarily providing a meaningful public transportation service.' This fits the Severn Valley perfectly.
By tagging this object as railway=rail you are implying that it is a public rail service, national rail and this will have a knock on effect to other use cases beyond your own.
Thanks Phil -
Comment from Martin Wynne
Hi Phil,
Thanks for your reply.
I would think that OSM is primarily a map (the clue being in the name), rather than a database. A map should show what is physically present on the ground, which in this case is a standard-gauge railway in working order. The frequency and types of trains doesn't change its physical existence. I note that the Ordnance Survey maps do not show the SVR in any different style from other single-track railways, so I'm not clear why OSM should treat it differently in terms of its actual appearance on the map.
cheers,
Martin.
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Comment from trigpoint
Hi Martin
OSM is primarily a geographic database which can be rendered in many different styles. What you see on the main page is a few styles but anybody can set up a renderer and define their own.
The reason for the different tagging is for different uses is years of consensus among the community. We are an international community and things are not always tagged as they would be if we were a UK project. We are not Ordnance Survey and we are not trying to replicate their style. Mapping the SVR as preseved allows other renderers, public transport apps to distingush it from true public transport.
This should be put back to what it is, I appreciate there is an issue in the mapnik rendering, the Transport Map does get it right. But the correct approach is to suggest improvements and get that fixed, or find a different renderer.
Cheers Phil
Ways (1-20 of 22)
- 1
- 2
- Severn Valley Railway (55885309), v6
- Severn Valley Railway (55885315), v2
- Severn Valley Railway (4016382), v11
- Victoria Bridge (73983962), v5
- Severn Valley Railway (73983967), v3
- Severn Valley Railway (158752259), v2
- Severn Valley Railway (4016399), v12
- Severn Valley Railway (156842602), v4
- Severn Valley Railway (157586247), v3
- Severn Valley Railway (60577116), v6
- Severn Valley Railway (37721131), v5
- Severn Valley Railway (158752258), v2
- Severn Valley Railway (158752255), v3
- Severn Valley Railway (4016401), v10
- Severn Valley Railway (158752262), v2
- Severn Valley Railway (158752261), v2
- Severn Valley Railway (158752252), v2
- Severn Valley Railway (158752260), v4
- Severn Valley Railway (39461458), v3
- Severn Valley Railway (39461459), v3
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