Track Occupancy Indications

ATCS Monitor uses colors to indicate track status:

• White - empty track
• Green - track authorized
• Red - track occupied
• Grey - track is a dark section
• Blue - sometimes appears when dispatcher has given work crew time-and-track

Other forms of occupancy have been suggested:

• Inverted occupancy - train is upside down (not to be used to indicate coal unloading at power plants)
• Converted occupancy - railroad has been sold to a foreign government
• Diverted occupancy - train is really on a different track
• Perverted occupancy - track is leased to a weirdo
• Subverted occupancy - CIA-owned train is operating
• Transverted occupancy - engines are operating on a-c
• Reverted occupancy - bank has foreclosed on railroad
• Introverted occupancy - train never leaves home rails
• Extroverted occupancy - head end is always hooking up with foreign power
• Existential occupancy - train questions whether it's real: Signal is red; therefore I am

-- BillTheOther - 2010-01-24