There is a 'modern' photo on RailPictures.net by Matthew Robson which shows
4106 coming off the CP bridge at Cisco (Siska). This shows something that
looks like an extra light on the roof of the loco about halfway back. Totally
different to what you are discussing, but there is something there all the same!
The only use I can think of for something like that, is to light-up the tunnel
roof to high-light any icicles or other intrusions that the loco or following
cars may hit.
As for the one being discussed, the logical answer seems to be the 'official
answer' from CP!
Anyone know any Canadian Engineers out there to ask?
Keith
--- In cpsig@xxxxxxxxxxxxxxx, G Burridge <gburridge@...> wrote:
At 29/02/2012 08:17 PM (), you wrote:
Joe-Ann's reply begs other questions, being as misleading as it is. The
Uniform Code of Operating Rules was law in Canada, being a federal
regulation. Rule 17D therein is patently clear:
17. On engines so equipped, [an] oscillating white headlight must
be displayed (turned on) to the front by day and by night. It must
be extinguished when the headlight is dimmed or extinguished. [The]
oscillating white headlight should be used in a stationary position
as a substitute headlight in case of failure of the headlight.
(Bracketed and parenthetical words added.)
"Oscillating . . . headlight" for the purpose of this rule was uniformly
interpreted as any separately and intentionally induced headlight
movement,...
Unless ... IF this question arose and needed clarification
a ruling was requested and granted by the BTC stating that the
_roof-lights_ were not _headlights_ and so not governed by that part
of the UCOR. Much the same as track inspection lights on Business
cars, etc., were considered neither markers nor lanterns.
Interestingly, illuminating the gyrolight when or where it
might not otherwise be used would seemingly be _mandatory_ under rule
17C, which basically states that if the engine headlight fails on the
road and repairs cannot be made "such lights as are available will be
displayed" until the point where repairs can be made is arrived at.
Therefore, regardless of intent for installing and using these
additional lights even if merely PR; the aforementioned regulatory
requirements imposed the specified obligations on the railway, which
could not be deviated from, short of uninstalling or removing the
oscillating [supplementary] lights.
VRP
Train Dispr and
Relief Rules Instructor, ret.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Gerry Burridge - P.O. Box 152 - Pte.Claire, Que. - H9R 4N9 - CANADA
Railways of Quebec City and South-Eastern Quebec:
<http://pages.globetrotter.net/burridge/index.htm>
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