What is "signal light"

Usage examples of "signal light".

A green signal light came on after Ellwood passed his plastic key through the reader.

I keep seeing every tie of the track down there, every signal light, every bridge, every night that I spent when .

Sure enough, when she entered the lounge, the signal light came on for boarding.

A signal light appeared before Nil Spaar, and he muted the grid displays.

I failed to connect it with your operation until I saw the green signal light just now.

Ahead of them the road forked, and Tamara turned on the left signal light.

There had been no way to get results to the child on a planet where the loudest sound of a bullhorn would be drowned out by thunder in a few hundred meters, the brightest portable signal light stopped by haze in a kilometer or two, and constant lightning and ionized haze made essentially all electromagnetic communication equipment useless.

Only when the red signal light indicated the closure of the outer gate did the Security Chief venture to move.

With the charge in his lasgun running low, the boy scrabbled back behind the ridge where he had set up his attack, and then he headed out at top speed toward the blinking signal light he had seen.