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| Signal head at Wyckoff Ave (424114) | |
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| (424114) | |
Signal head at Wyckoff Ave |
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Posted by mshull on Tue May 1 21:56:30 2007 I noticed this odd signal head posted by John Barnes. What are the two aspects below the automatic? |
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| (424119) | |
Re: Signal head at Wyckoff Ave |
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Posted by David of Broadway on Tue May 1 22:14:32 2007, in response to Signal head at Wyckoff Ave, posted by mshull on Tue May 1 21:56:30 2007. Cat's eyes. I'm honestly not sure what they're used for these days, but if they're white, you're OK, and if they're red, you're not. Most of them seem to be found at entrances to river tunnels and the like.Here are some more shots, taken July 30, 2006:   
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| (424126) | |
Re: Signal head at Wyckoff Ave |
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Posted by mellow one on Tue May 1 22:35:53 2007, in response to Re: Signal head at Wyckoff Ave, posted by David of Broadway on Tue May 1 22:14:32 2007. Since there are no xovers until the end of the line, the inbound track could be used for a single track shuttle to the end of the line at Metropolitan Ave. The bottom signal may indicate the status of the xover at Metropolitan Ave. |
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| (424193) | |
Re: Signal head at Wyckoff Ave |
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Posted by R36 #9346 on Wed May 2 07:36:49 2007, in response to Re: Signal head at Wyckoff Ave, posted by mellow one on Tue May 1 22:35:53 2007. Has nobody read the signals page at nycsubway.org?The signal in question is called a train order signal. If the white lights are showing, there are no orders, and the train can proceed normally. If the red lights are showing, the train should stop and stay, and the T/O should phone the number or location indicated (in this case, the Control Center) to receive orders. |
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| (424254) | |
Re: Signal head at Wyckoff Ave |
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Posted by Chris R16/R2730 on Wed May 2 12:34:22 2007, in response to Re: Signal head at Wyckoff Ave, posted by mellow one on Tue May 1 22:35:53 2007. More likely, it's there to prevent any single track shuttle from advancing farther. In David's pictures, you see the lower red aspect lit, meaning you are under no circumstances to proceed past it. |
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| (424282) | |
Re: Signal head at Wyckoff Ave |
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Posted by Broadway Lion on Wed May 2 13:30:48 2007, in response to Signal head at Wyckoff Ave, posted by mshull on Tue May 1 21:56:30 2007. Train Orders. |
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| (424336) | |
Re: Signal head at Wyckoff Ave |
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Posted by North-Easten T/O on Wed May 2 16:42:40 2007, in response to Re: Signal head at Wyckoff Ave, posted by R36 #9346 on Wed May 2 07:36:49 2007. I had a red one once before getting on the Willy B. Command wanted me to change ends and head back to Parson Ave. It was a good day.Robert |
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| (424428) | |
Re: Signal head at Wyckoff Ave |
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Posted by H.S.Relay on Wed May 2 19:42:15 2007, in response to Re: Signal head at Wyckoff Ave, posted by mellow one on Tue May 1 22:35:53 2007. he bottom signal may indicate the status of the xover at Metropolitan Ave.Not so. |
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| (424445) | |
Re: Signal head at Wyckoff Ave |
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Posted by mshull on Wed May 2 20:16:43 2007, in response to Re: Signal head at Wyckoff Ave, posted by R36 #9346 on Wed May 2 07:36:49 2007. Thank you!Obviously in this photo, it had better be red, because there is a train coming in the opposite direction! |
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| (424491) | |
Re: Signal head at Wyckoff Ave |
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Posted by randyo on Wed May 2 21:10:40 2007, in response to Re: Signal head at Wyckoff Ave, posted by R36 #9346 on Wed May 2 07:36:49 2007. An interestin aspect of train order signals is that they have no retaining circuits. This means that if the controlling tower throws the train order signal while a train is passing it, the train will be tripped on other than an operating car. The reason for that is that, should an emergency occur which requires all service entering the area to be stopped immediately, there will be less likelihood of a passenger train being sent into an area where it would be dangerous such as a smoke condition. |
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