The light on the panel indicated 3 and the car stopped with a jerk.

A warning light was indicating a fire in the cargo hold down below.

A green light on the roof indicates that the taxi is available.

A white light on the roof indicates that the taxi is free.

The red light indicated that the right main gear was not locked in position.

The little orange light indicated that the line was open.

A green light indicates when you're on the air.

The lights on their stocks indicated they were still charged.

The light on his telephone indicated he had a message.

A light and a sound indicate which car will be first to go to that floor.