| Joao Balseiro, RL , Federico Santagati, classick and 4 other liked this |
Federico Santagati
Jan 27, 2016
What does the Blue Flag mean?
@Taurus717 Blue Flagging means that the equipment (in this case a locomotive) cannot be moved until whomever put the blue flag in place removes it. This is done to prevent any movement that might cause bodily harm to personnel working on it.
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