"Red" indicated that the individual was a card-carrying communist.

Red should have indicated even higher wind velocity than we were in now, but I knew that was wrong.

Red indicates that there is an important message for the user to solve.

Red and green signals mounted on overhead gantries indicate which lanes are open or closed to traffic in each direction.

Red indicates that flows are high and that great care is required.

Red and blue may have indicated arterial and venous blood.

Red would indicate they should look at the cue but not think about or say the associated word.

Red and yellow arrows indicate in which direction the pilot needs to manoeuvre to be on the centreline.

Red indicates directions in the X axis: right to left or left to right.

Red identified the wizard and indicated that irritating the same would be paid with dire consequences.