Signals

[NW Mailing List]

Bruce hit the nail on the head. Also of note after a track is shunted it 
takes several seconds for it to change aspect. I've always known it took 
a little bit but didn't know how much until after I deadheaded by train 
the other night. At 50 MPH the signal would still be showing clear when 
we went by it on the 2nd engine. At 25 MPH it would change roughly about 
the time my window would get to it on the second engine. So likely 
dependent on the speed of the pusher set the aspect probably just hasn't 
changed yet.

Nathan


On 6/29/2017 14:29, NW Mailing List wrote:
> On Thu, Jun 29, 2017 at 3:23 PM,
> Carl
>  wrote:
>
>     Can somebody explain this:
>
>     http://www.railpictures.net/photo/552384/
>     <http://www.railpictures.net/photo/552384/>
>
>     How can the signal be green when a train is coming?
>
>
> ​Per the caption, the train isn't coming, it is a pusher set going 
> away. It is problaby a combination of the telephoto lens and the 
> actual location of the engines that makes this look odd, but more than 
> likely the helpers haven't yet passed the point on the track that will 
> trigger the signal to drop to red.
>
> Bruce in Blacksburg
> ​
>
>
>
>
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-- 
Nathan Simmons
trainman51 at gmail.com
http://www.t-51.org
KI4MSK

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