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| signal codes? http://interceptradio.com/bbs/viewtopic.php?f=17&t=3845 |
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| Author: | Wilrobnson [ Mon Feb 08, 2010 11:18 pm ] |
| Post subject: | signal codes? |
Anyone have tips on how to interpret the signals along the railways? I.e. green is oncoming, yellow is...? Flashing yellow? Etc. |
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| Author: | icom1020 [ Tue Feb 09, 2010 10:43 am ] |
| Post subject: | Re: signal codes? |
flashing yellow(proceed prepared to stop at the second signal and reduce to 40mph). Then Yellow (proceed prepared to stop at the next signal and reduce to 30 mph). But it is also somewhat subjective Here is a good source from a recently retired BNSF engineer http://www.alkrug.vcn.com/rrfacts/signals/signals.htm |
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| Author: | N7QOR [ Tue Feb 09, 2010 3:32 pm ] |
| Post subject: | Re: signal codes? |
icom1020 wrote: flashing yellow(proceed prepared to stop at the second signal and reduce to 40mph). Then Yellow (proceed prepared to stop at the next signal and reduce to 30 mph). But it is also somewhat subjective Here is a good source from a recently retired BNSF engineer http://www.alkrug.vcn.com/rrfacts/signals/signals.htm That's a really good article. I am still a little unclear on some of the basics, but it makes much more sense. Thank you! |
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| Author: | Tree [ Mon Mar 01, 2010 7:14 am ] |
| Post subject: | Re: signal codes? |
ATCS |
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| Author: | Lucky Dog [ Wed Mar 10, 2010 1:52 am ] |
| Post subject: | Re: signal codes? |
Railroads call the indication of a signal the ASPECT. In simplest terms: Green means go, red means stop, yellow means watch out! But can be much more complicated than that. Just google "railroad signal aspects". More info than you ever wanted to know. These are a couple of good ones: http://www.lundsten.dk/us_signaling/signalbasics/ http://broadway.pennsyrr.com/Rail/Signal/ The mainline signals stay the same for most railroads. These would be single target and dual target (leaving siding to single track main). Where it gets real interesting is in what are called interlocking limits. These are typically three target signals with the lamps all in a vertical row. Think of three lamps, colors of Red, Green, Yellow, lunar (white) and the possibility of flashing one or more. Also in congested areas, like Seattle thru the tunnel and south to Black River special aspects will be common. Around here most signals (with the exception of interlockers) remain dark until a train activates them. So if a signal is normally dark and then turns on, that means there is "probably" a train around somewhere that activated it. Lucky Dog |
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| Author: | Scannertastic [ Sun Sep 19, 2010 2:26 pm ] |
| Post subject: | Re: signal codes? |
Here is exactly what is in Union Pacific's System Special Instructions. Attachment: signals 1.jpg Attachment: Signals2.jpg Attachment: signals3.jpg I am a Senior Instructor for Transportation and a locomotive engineer. |
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| Author: | Scannertastic [ Sun Sep 19, 2010 2:28 pm ] |
| Post subject: | Re: signal codes? |
Attachment: signals4.jpg Attachment: signals5.jpg
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