[Tagging] Tracks for moveable large objects

[Warin]

Hi,


Some radio telescopes are located on what could be called rail lines.


though these lines have to carry more localised weight and have a much 
larger track width.


For a photo see

http://www.atnf.csiro.au/resources/imagebank/images/ATCA_in_a_line.jpg


Ideas for suitable tags for these 'rail lines'?


My first idea...

man_made=rail_line, width=* for the track width, length=* for the track 
length???


At the moment I have tagged railway=rail and a note=not for trains.

See Way: 647916738

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This same problem occurs for other large objects on rails..e.g. large 
cranes (thinking of one 250 ton crane on a dockside), possibly rocket 
launches.

So it is not just for radio telescopes.