Re: [OSM-talk] level_crossing, leveled

2011-05-28 Thread Russ Nelson
Richard Mann writes:
 > Unless you operate to peculiar safety standards, there'll probably be
 > a stop sign on the track some way either side of the former
 > crossing(probably set for the stopping distance of the heaviest train
 > operating at linespeed, and taking the gradient into account - which
 > could easily be a mile away). So there'll be quite a length of track
 > that's "disused". I'd probably tag the railway as abandoned, and
 > remove the level crossing, if it looks like a permanent situation.

If the tracks are gone, I tag it railway=abandoned. If the tracks are
still there, I tag it railway=disused, even if it's disconnected from
the main line. Railroads in New York will *often* disconnect tracks
they aren't currently using because tracks connected to the national
rail network are taxed at a higher rate. Of course, land with no
tracks at all is taxed even lower, so rails quickly get ripped up
here. Have I ever said how much I hate the greedy hand of government?
I much prefer the invisible hand of markets. Invisible hands don't
levy taxes and cause tracks to be unnecessarily ripped up!!!

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Re: [OSM-talk] level_crossing, leveled

2011-05-26 Thread John F. Eldredge
True, but it might well derail a locomotive in the winter.  I once saw a  
locomotive derailed by mud that had flowed across the track, then frozen..   
Fortunately, the locomotive was moving slowly enough that it didn't cause a  
catastrophic accident.


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-Original message-
From: Russ Nelson 
To: Richard Weait 
Cc: talk@openstreetmap.org
Sent: Thu, May 26, 2011 05:04:31 GMT+00:00
Subject: Re: [OSM-talk] level_crossing, leveled

Richard Weait writes:
> What should be done with a level_crossing, when trains may cross no  
longer?
> 
> The junction was a level_crossing, but has been repaved and

> re-sculpted.  The rails are now covered by 0.3 - 0.4 m of asphalt
> which appears to have been laid directly over the tracks.  So the
> railway hardware appears to still be there, but unusable.  The rails
> continue both directions from the level_crossing.
> 
> To this point, I have left the level_crossing tag in place; it can

> still serve as a waypoint, I suppose.

30cm of asphalt on a warm sunny day is no barrier to a 170 ton
locomotive. Think of a marshmellow being run over by a car.

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Crynwr supports open source software
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Potsdam, NY 13676-3213  | Sheepdog   


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Re: [OSM-talk] level_crossing, leveled

2011-05-26 Thread Richard Fairhurst
Richard Weait wrote:
> Any thoughts or widely accepted customs regarding this?

I'd use a length of either railway=disused or railway=abandoned.

IMX it only takes a year or so for a disused railway, often called OOU in
the UK ("out of use"), to become unsuitable for trains to "turn up and go".
On occasion the problem is just a bit of overgrowth, but more frequently,
there'll be something serious that needs addressing before trains can pass
again: signalling, skewed or stolen rails, washed-out trackbed. A bit of
tarmac across the rails is probably the least of these problems.

So, given that "disused" means "permanent way still largely in place but
some work required to get it back in place", I'd be tempted to stick with
railway=disused even despite the odd bit of tarmac. (The example that
springs to mind most readily in the UK is the Amlwch branch, for those who
know it.)

cheers
Richard



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Re: [OSM-talk] level_crossing, leveled

2011-05-26 Thread John Smith
On 26 May 2011 18:53, Richard Mann  wrote:
> Unless you operate to peculiar safety standards, there'll probably be
> a stop sign on the track some way either side of the former
> crossing(probably set for the stopping distance of the heaviest train
> operating at linespeed, and taking the gradient into account - which
> could easily be a mile away). So there'll be quite a length of track
> that's "disused". I'd probably tag the railway as abandoned, and
> remove the level crossing, if it looks like a permanent situation.

I hit this when I first started mapping, there is a lot of track about
the place, and the crossings are still there, but tarred over, rather
than ripped up.

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Re: [OSM-talk] level_crossing, leveled

2011-05-26 Thread Richard Mann
Unless you operate to peculiar safety standards, there'll probably be
a stop sign on the track some way either side of the former
crossing(probably set for the stopping distance of the heaviest train
operating at linespeed, and taking the gradient into account - which
could easily be a mile away). So there'll be quite a length of track
that's "disused". I'd probably tag the railway as abandoned, and
remove the level crossing, if it looks like a permanent situation.

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Re: [OSM-talk] level_crossing, leveled

2011-05-25 Thread Russ Nelson
Richard Weait writes:
 > What should be done with a level_crossing, when trains may cross no longer?
 > 
 > The junction was a level_crossing, but has been repaved and
 > re-sculpted.  The rails are now covered by 0.3 - 0.4 m of asphalt
 > which appears to have been laid directly over the tracks.  So the
 > railway hardware appears to still be there, but unusable.  The rails
 > continue both directions from the level_crossing.
 > 
 > To this point, I have left the level_crossing tag in place; it can
 > still serve as a waypoint, I suppose.

30cm of asphalt on a warm sunny day is no barrier to a 170 ton
locomotive. Think of a marshmellow being run over by a car.

-- 
--my blog is athttp://blog.russnelson.com
Crynwr supports open source software
521 Pleasant Valley Rd. | +1 315-600-8815
Potsdam, NY 13676-3213  | Sheepdog   

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Re: [OSM-talk] level_crossing, leveled

2011-05-25 Thread Phil! Gold
* Richard Weait  [2011-05-25 15:10 -0400]:
> HI all,
> 
> What should be done with a level_crossing, when trains may cross no longer?

I usually have the disused raily intersect the road but don't tag a
level_crossing on the intersection.

In some cases (where the tracks have been torn up rather than just paved
over), I'll split the railway into three pieces and tag the part that
crosses the road as abandoned rather than disused.

-- 
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PGP: 026A27F2  print: D200 5BDB FC4B B24A 9248  9F7A 4322 2D22 026A 27F2
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When you say "I wrote a program that crashed Windows", people just stare at
you blankly and say "Hey, I got those with the system, *for free*".
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Re: [OSM-talk] level_crossing, leveled

2011-05-25 Thread John Smith
On 26 May 2011 05:10, Richard Weait  wrote:
> HI all,
>
> What should be done with a level_crossing, when trains may cross no longer?
>
> The junction was a level_crossing, but has been repaved and
> re-sculpted.  The rails are now covered by 0.3 - 0.4 m of asphalt
> which appears to have been laid directly over the tracks.  So the
> railway hardware appears to still be there, but unusable.  The rails
> continue both directions from the level_crossing.
>
> To this point, I have left the level_crossing tag in place; it can
> still serve as a waypoint, I suppose.
>
> Any thoughts or widely accepted customs regarding this?

I usually tag them as level_crossings, but some kind of disused tag
might be more suitable

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[OSM-talk] level_crossing, leveled

2011-05-25 Thread Richard Weait
HI all,

What should be done with a level_crossing, when trains may cross no longer?

The junction was a level_crossing, but has been repaved and
re-sculpted.  The rails are now covered by 0.3 - 0.4 m of asphalt
which appears to have been laid directly over the tracks.  So the
railway hardware appears to still be there, but unusable.  The rails
continue both directions from the level_crossing.

To this point, I have left the level_crossing tag in place; it can
still serve as a waypoint, I suppose.

Any thoughts or widely accepted customs regarding this?

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