Reply to "Signal light question"

Rich MelvinOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Swav, railroad signals are NOT "...green on top, amber in the middle, and red at the bottom." Depending on the aspect they must display, they could have any color appear almost anywhere. It is a VERY common misconception that signals are set up the way you have described.

Here are a few examples that just pop into my head at the moment:

"Medium Clear" is red over green, or red-green-red on a 3-light signal.

"Medium Approach" is red over two yellows (on some roads.)

"Advance Approach" is two yellows.

There is a lot more to railroad signalling than just CLEAR (green), APPROACH (yellow) and STOP (red.)

12/30/1110:54 AM

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