Re: [CBQ] Follow up on SD40's Lighting question

["Winton" <runextra@gmail.com>]

[Edited Message Follows]

The red & white Mars light between the numberboards has NOTHING to do with the 
train 'Class' or schedule.

The 1967 CCOR rulebook says...

Rule 17 (in part) The headlight must be displayed burning bright to the front 
of every train by day and by night.

Rule 17c On engines so equipped, oscillating white headlight must be displayed 
approaching and passing over public crossings and through cities and towns by 
night or during foggy or stormy weather. It must be extinguished when the 
headlight is dimmed or extinguished.  Oscillating white light should be used in 
a stationary position as  substitute headlight in case of failure of the 
headlight. 

Speaking from personal experience, It was not uncommon for engineers to forget 
the oscillating or stationary white Mars  light was on at daybreak or after 
having used it in daytime stormy weather.  Note that the rule only states when 
the Mars light MUST be used. It does not prohibit its use at other times at 
engineer's discretion.
 
AK

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