Danger signal
noun ·Rare ·Advanced level
Definitions
- 1 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 https://books.google.no/books?id=qcMgBJ1exfIC&pg=PA137&lpg=PA137&dq=%22at+a+danger+signal%22&source=bl&ots=c4Rl2aryKd&sig=vhZYJY8AkP63OAbCws6GS9882q4&hl=no&sa=X&ved=0ahUKEwjg2OSL19PZAhXJJMAKHQxdA2sQ6AEILzAB#v=onepage&q=%22at%20a%20danger%20signal%22&f=false 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 An indication that a potentially bad or dangerous situation could develop. also, figuratively
Antonyms
All antonymsExample
More examples"2005, "Practical Railway Engineering" by Clifford F. Bonnett, Imperial College Press →ISBN https://books.google.no/books?id=qcMgBJ1exfIC&pg=PA137&lpg=PA137&dq=%22at+a+danger+signal%22&source=bl&ots=c4Rl2aryKd&sig=vhZYJY8AkP63OAbCws6GS9882q4&hl=no&sa=X&ved=0ahUKEwjg2OSL19PZAhXJJMAKHQxdA2sQ6AEILzAB#v=onepage&q=%22at%20a%20danger%20signal%22&f=false 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."