Is there anything wrong with that?
Jun 8, 2020, 13:57 by [email protected]:
>> in the ID editor, if you draw a stream - river line, and it crosses a road,
>> you get a warning, with the suggestion
>>
>> add a bridge or tunnel.
>>
>>
>>> Monday, June 8, 2020 5:13 AM -05:00 from Martin Koppenhoefer <>>>
>>> [email protected] <javascript:void(0)>>>> >:
>>>
>>> Am Sa., 6. Juni 2020 um 18:02 Uhr schrieb Dave F via talk <>>>
>>> [email protected]
>>> <http://e.mail.ru/compose/?mailto=mailto%[email protected]>>>> >:
>>>
>>>> Do you have an example?
>>>>
>>>>
>>>
>>>
>>> A simple example for a tunnel (here subway) on a bridge would be this:
>>> https://www.openstreetmap.org/way/757824513
>>> https://fr.wikipedia.org/wiki/Pont_Morand
>>>
>>>
>>>
>>>
>>>> Whether it's a bridge or tunnel is fairly easily defined by determining
>>>> which is taking the load.
>>>> If a tunnel's structure was removed, would whitewater's above it
>>>> collapse? If 'yes' then it's a tunnel.
>>>>
>>>
>>>
>>>
>>> what I wrote was that - according to some technical definitions - a tunnel
>>> must not have something above it, it may be sufficient that it is closed
>>> and long enough. I am not sure if we share these definitions in OSM.
>>> According to the current wiki, "a tunnel is an underground passage for a
>>> road or similar." and also: ">>> tunnel <>>>> =*>>> is used for roads,
>>> railway line, canals etc that run underground (in >>> tunnel
>>> <http://en.wikipedia.org/wiki/en:Tunnel>>>> ). " This doesn't appear to be
>>> exhaustive / complete, tunnels could also run underwater, above ground and
>>> potentially in the future even in space, no?
>>> Many current underwater tunnels are also "underground", as they are often
>>> running in a man made structure (embankment like) on the ground or below
>>> the water body/river in the ground
>>>
>>>
>>>
>>> Cheers
>>> Martin
>>>
>>>
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