Deleted
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JF21
Oct 31, 2005 21:05:43 GMT
Post by Deleted on Oct 31, 2005 21:05:43 GMT
After having visited Northwood and having a look around, I can't understand why this signal is suppressed in the first place - it's not easily visible from the up main, it's partially blocked by OPO monitors and there doesn't seem to be any easy way for it to be read in lieu of something else. Harsig's awesome diagram states that JF21 is approach lit - but which direction do you have to approach from to light it? Also, if JF19 is dropped for the siding, would JF21 be lit to provide the stop aspect? |
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JF21
Nov 1, 2005 10:22:04 GMT
Post by Harsig on Nov 1, 2005 10:22:04 GMT
After having visited Northwood and having a look around, I can't understand why this signal is suppressed in the first place - it's not easily visible from the up main, it's partially blocked by OPO monitors and there doesn't seem to be any easy way for it to be read in lieu of something else. Harsig's awesome diagram states that JF21 is approach lit - but which direction do you have to approach from to light it? Also, if JF19 is dropped for the siding, would JF21 be lit to provide the stop aspect? The aspect on signal JF21 is illuminated when either of the two track circuits (DD & DE from memory) in the northbound platform are occupied by a train. Thus if you watch the signal as a train arrives on the northbound you will see the signal illuminate as the front of the train passes the end of the platform. |
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Deleted
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JF21
Nov 3, 2005 1:48:00 GMT
Post by Deleted on Nov 3, 2005 1:48:00 GMT
After having visited Northwood and having a look around, I can't understand why this signal is suppressed in the first place - it's not easily visible from the up main, it's partially blocked by OPO monitors and there doesn't seem to be any easy way for it to be read in lieu of something else. I'm almost certain the problem was the visibilty of JF21 from the SB local, on approach to the station, prior to the installation of the OPO monitors. That signalling, in its present form, was in place long before OPO was introduced. |
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