danger signal

English
A signal on red is a danger signal.

Alternative forms

Noun

danger signal (plural danger signals)

  1. (rail transport) A signal set at danger and showing a red light or other stop indication, which a train driver must not pass until it changes or until manually cleared past the signal by a dispatcher.
    • 2005, "Practical Railway Engineering" by Clifford F. Bonnett, Imperial College Press →ISBN
      On a train travelling at say 40 miles per hour a driver would have to react quite quickly to bring his train to a halt at a danger signal even if he could see that signal half a mile away.
  2. (also figurative) An indication that a potentially bad or dangerous situation could develop.

Translations

References

Anagrams
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.