What are the railroad crossing signs?

Railroad crossing signs are designed to alert drivers of railroad tracks ahead. Drivers must be aware of any approaching trains from both directions and be prepared to stop, if necessary. This sign is a passive sign, compared to an active sign, such as the traffic control devices or lights at the train crossing.



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If there is more than one track, that sign will be present. After one train has passed, look and listen in case another train is coming from either direction. STOP and YIELD signs at the crossing have the same meaning as they do at other intersections.

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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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A stop line, an X and the letters RR may be painted on the pavement in front of railroad crossings. These markings warn you to be aware of the crossing ahead and to pay particular attention to the possible approach of a train.

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At most crossings, the signals will activate about 30 seconds before the train arrives but there are sensors measuring speed so that the crossing knows when to activate; so, the slower the train is, the longer the delay and the faster the train is, the earlier the crossing activates.

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Trains may pass through any time of the day or night, so drivers must not stop on train tracks to avoid any potential collisions. Railroad crossing signs are a yellow circle, with the letters and symbol in black. This sign is found before the crossing of a railroad, and may be accompanied with pavement markings.

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The double arrow symbol, indicating access to the National Rail network, can be used in many forms but these have restrictions and should only be used in specific areas. This page indicates the differing forms and specifies areas of application.

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