Pic 5 of 32: Twin aspect signal in UBL division? A long exposure shot captures both aspects of the starter for YPR-VSG at Devanur. 2009-09-08, Bizzy Mishra ()
Date: 2009-09-09
Photo Properties
Summary Details
| Make | SONY | Model | DSC-H5 |
| Aperture Value | f/4 | Color Space | sRGB |
| Exposure Bias Value | 0 EV | Exposure Program | Manual |
| Flash | No Flash | Focal Length | 36 mm |
| ISO | 80 | Metering Mode | Center Weighted Average |
| Shutter Speed Value | 8 | Date/Time | 2009 Sep 08 22:23:11 +0000 |
Recent comments
@ Ramdev...Thanks a lot for the clarification. I am aware that this is not twin-aspect signalling. In reality, this was a 15 sec exposure, during which the aspect of the starter changed from danger to caution, making it look like twin-aspect. Sorry...
@ Ramdev...Thanks a lot for the clarification. I am aware that this is not twin-aspect signalling. In reality, this was a 15 sec exposure, during which the aspect of the starter changed from danger to caution, making it look like twin-aspect. Sorry about any confusion...
Posted by Bizzy Mishra on 2009 Oct 16 14:06:38 +0000
I guess that you have presumed this to be two aspect signalling since you can see only either red or green signal. This is because the train is on the mainline and mainline starter signal has only two aspects i.e either proceed of danger and no caution ...
I guess that you have presumed this to be two aspect signalling since you can see only either red or green signal. This is because the train is on the mainline and mainline starter signal has only two aspects i.e either proceed of danger and no caution since it need not take a turnout after the starter signal.
Posted by Ramdev Gowda on 2009 Oct 15 13:36:22 +0000
It is not two aspect signalling since two aspect signalling is used in sections where a downgoing train has to take a loop line at the station and then again take the main line after taking the loop. In this case the home advance signal is always at...
It is not two aspect signalling since two aspect signalling is used in sections where a downgoing train has to take a loop line at the station and then again take the main line after taking the loop. In this case the home advance signal is always at "proceed at caution" aspect with one red and one green light on at the same time and the home signal is always at proceed, which means proceed to loop line at 15kmph or the speed for which the turnout has been designed for. The starter signal in this case would be either red i.e danger or green which is proceed. I have posted what I have understood about 2 aspect signalling. If I am wrong kindly correct me.
Also no section between SBC and CLR has two aspect signalling.
Posted by Ramdev Gowda on 2009 Oct 15 03:49:39 +0000