Distant signal is a term used to denote a type of railway signal that repeats the indication of a following signal and warns a train of the need to stop at that following home signal. The term originated in British English and is used throughout the English-speaking world. In some regions, notably North America, the terms distant signal and approach signal are both in common usage.
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A roadway signal used to govern the approach to another signal and if operative so controlled that its indication furnishes advance information of the indication of the next signal. (49CFR236)
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