The city installed new traffic signals to improve safety at the busy intersection.

The old observatory still broadcasts time-signals to commuter trains every hour.

The engineers calibrated the time signals to synchronize the global network.

In our communication protocol, the transmitter encodes the data as a continuous stream of signalling events, each being the smallest unit of signal the receiver needs to recover the original data without error.

During the panel discussion, virtue signallers interrupted speakers to make moral judgments rather than offer solutions.

The rescue team monitored the distress signals until the survivors were found.

The coach taught the players to respond quickly to the ball signals during the drill.

During the meeting, the virtue signalers dominated the conversation with empty platitudes.

The captain explained the danger signals used by the lighthouse to approaching ships during the storm.

The astronomers detected faint radio signals coming from a distant galaxy.