What do the lights above train tracks mean?

“Green” is 2 vertical lights & means “clear”.” “Yellow” is 2 diagonal lights pointing up to the right & means “approach.” “Red” is 2 horizontal lights & means “stop.” “Lunar white” is 2 diagonal lights pointing down to the right & means “restricted speed.”



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The rearlights on locomotives, multiple units and railcars. To ensure that the rear of the failed train is always visible, all trains are required to display three red lights at their rear: two tail lamps plus the red portion of the destination roller blind.

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  • 2.1 Train headlights.
  • 2.2 Classification lights.
  • 2.3 Emergency lights.
  • 2.4 Ditch lights.
  • 2.5 Strobe lights.
  • 2.6 Door indicator lights.
  • 2.7 Train rearlights.
  • 2.8 End-of-train device.


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Just as cabooses were variously called hacks, crummies, cabins, etc., end-of-train devices go by a variety of names. Besides ETD, there's EOT, marker, FRED or Freddy (flashing rear-end device), and even Billy and Redman. The simplest ETDs are merely darkness-actuated flashing lights that serve only as markers.

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Mercifully, new trains no longer dump waste on the tracks. Instead, trains are fitted with chemical holding tanks. These are connected to regular toilets or vacuum toilets. Like aeroplanes, these need to be emptied regularly, leading to trains having to return to terminal stations.

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Most modern trains are equipped with security cameras both inside and outside the carriages. These cameras can monitor passenger behavior, platform activities, and even the tracks. Accessing Footage: Law Enforcement: The footage can typically be accessed by law enforcement agencies in the course of an investigation.

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The end of train device (ETD), sometimes referred to as an EOT, flashing rear-end device (FRED) or sense and braking unit (SBU) is an electronic device mounted on the end of freight trains in replacement of a caboose.

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Hopper toilet The hole in the floor (also known as a drop chute toilet or direct flush toilet) system is still in use in many parts of the world, particularly on older rolling stock.

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A terminus or terminal is a station at the end of a railway line.

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BERTH. a bed on a ship or train; usually in tiers.

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