What are the two types of warning devices for a railroad track?

Active Grade Crossings have active warning and control devices such as bells, flashing lights, and gates, in addition to passive warning devices such as crossbucks (the familiar x-shaped signs that mean yield to the train), yield or stop signs and pavement markings.



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Crossings can be classified as follows:
  • On the basis of shape of crossing.
  • square crossing.
  • Acute angle or V-crossing or Frog.
  • Obtuse angle or Diamond crossing.
  • On the basis of assembly of crossing.
  • Ramped crossing.
  • Spring or movable crossing.


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Single yellow means you can pass your train this signal and be prepare to see the next signal , which is not yet clear. And double yellow means the you can pass this signal with your maximum permissible speed , as the next signal is also clear.

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What would be the first warning of an approaching train? Explanation: The steady amber light will be followed by twin flashing red lights that mean you must stop. An alarm will also sound to alert you to the fact that a train is approaching.

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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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A level crossing is an intersection where a railway line crosses a road, path, or (in rare situations) airport runway, at the same level, as opposed to the railway line crossing over or under using an overpass or tunnel.

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Railroad Crossing Signals Flashing red lights, lowered crossing gates and/or a bell at a railroad crossing indicate that you must stop, at least 15 feet (5 m) from the tracks.

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