colour light signals

A form of colour light signal — An electric railway signal with colour aspects, showing either red or green in a 2-aspect signal, with the addition of a yellow or double yellow aspect (meaning caution) in 3- and 4-aspect signals.

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Meanings

noun
  1. pluralplural of colour light signal
Cite this entry
APA

colour light signals. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/colour%20light%20signals

MLA

“colour light signals.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/colour%20light%20signals. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “colour light signals,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/colour%20light%20signals.

Source: colour light signals on Wiktionary, CC BY-SA 4.0.