The red lenses in distant signals were changed to yellow at the same time.

The distant signal is always the lower of the two.

German distant signals took the form of a yellow circular board with a black edge.

At night, distant signals showed two lights, one diagonally left below the other.

Used alone or in combination with a distant signal.

The investigators were said to be seeking to learn if the distant signal was properly set.

With multiple home signals, the distant signal applies to all.

To himself he sounded like a radio broadcasting a very distant signal.

There were a few distant signals, and even these died away.

Then Paks heard more distant signals, from the south side.