Reply to "Adding marker lights to mth engine"

The answers is....      o   o    __________       What  does  all this mean   ??

You the engineman on a regular time card train displaying green signals, meaning you're running as a section.

If you meet an opposing train it's your responsibility to notify the opposing train that  you're carrying the green by whistling  one long and 2 short    _________ o o.

The opposing train whistles back  o  o ________   (2 short and one long) indicating they acknowledge the  green signals.

If the   crews doesn't acknowledge the green the section must stop & notify the train.

I guess we also  need tiny green & white flags for our models.    Any who that's my story and probably a little more info than needed  on this thread,