Please use your turn signals when changing lanes on the highway.

Whenever he speaks about charity, he virtue signals to gain approval from his followers.

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

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

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

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

Neighborhood watch volunteers reported suspicious gang signals on the street corner last night.

After weeks of inconsistent texts and compliments, I couldn't tell what he meant — the mixed signals were overwhelming.

The sailors practiced using semaphore signals to send messages between ships at night.

The crew noticed several danger-signals flashing on the console and prepared to evacuate.