Signal safari part 3

[NW Mailing List]

On 8/5/2013 5:32 PM, NW Mailing List wrote:

> Okay, so can someone explain the differences between 408 & 410?  While 

> the upper targets are the same, the lower ones are not.

>

> Is there significance in that the lower target on 408 has only the 

> center spot lighted?  My very rudimentary understanding of all 

> position lights is that their design was meant to 'mimic' a semaphore, 

> so my expectation here would be that all three lights should be on 

> (and that the illumination of any one of them is the same as if all 

> three were lighted.)

>

> Ed Bell

>

> On 8/5/2013 8:51 AM, NW Mailing List wrote:

>> A couple old soldiers at Iaeger, and a shot from Keystone.

>> Jim Cochran

>>

>> Moderator:

>> http://nwhs.org/wiki/tiki-browse_image.php?imageId=408

>> http://nwhs.org/wiki/tiki-browse_image.php?imageId=409

>> http://nwhs.org/wiki/tiki-browse_image.php?imageId=410

Ed,
     Signal 408 is able to display:
Clear
Approach
Stop
Restricting

     Signal 410 is able to display:
Clear
Approach
Stop
     Dependent on trackage beyond, it also has the ability to display:
Advance Approach
Approach Diverging
Diverging Approach
Diverging Clear
Restricting

Jimmy Lisle

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