pass a signal

All of them were recorded to have passed red signals.

"We'll have to work out a way to pass signals back and forth."

The newcomer had simply passed a signal for the others to join him.

The system is designed so that as a train passes a signal, the light turns red.

The redhead knew that somebody was going to pass a signal.

This passed a signal to the ulema throughout the country.

He seemed about to pass a signal to someone within the walled grounds.

That person passed a signal when I showed interest in the teakwood box.

The cause was determined to have been human error, that the train crew had passed a red signal.

Mazian passed a signal to one of the guards at the door.